1. (一间)公寓;(一套)单元房
    A flat is a set of rooms for living in, usually on one floor and part of a larger building. A flat usually includes a kitchen and bathroom.

    e.g. Sara lives with her husband and children in a flat in central London...
           萨拉和丈夫还有孩子们住在伦敦中心城区的一间公寓里。
    e.g. It started a fire in a block of flats...
           大火是从一幢公寓大楼烧起的。

2. 平的;平展的;平滑的
    Something that is flat is level, smooth, or even, rather than sloping, curved, or uneven.

    e.g. Tiles can be fixed to any surface as long as it's flat, firm and dry...
           只要表面平整、坚固而且干燥，瓷砖就可以贴住。
    e.g. After a moment his right hand moved across the cloth, smoothing it flat...
           过了一会儿，他用右手把布抹平。

3. 水平的;非竖直的
    Flat means horizontal and not upright.

    e.g. Two men near him threw themselves flat...
           他身旁的两个男人直挺挺趴倒在地上。
    e.g. As heartburn is usually worse when you're lying down in bed, you should avoid lying flat.
           通常躺着的时候胃灼热会更加厉害，所以应当避免平卧。

4. 浅的;不深的;矮的;扁的
    A flat object is not very tall or deep in relation to its length and width.

    e.g. Ellen is walking down the drive with a square flat box balanced on one hand.
           埃伦正一手托着一个方形的扁盒子沿私人车道走着。

5. (地势)平的，平坦的，无起伏的
    Flat land is level, with no high hills or other raised parts.

    e.g. To the north lie the flat and fertile farmlands of the Solway plain...
           北边是索尔韦平原平坦而肥沃的农田。
    e.g. The landscape became wider, flatter and very scenic...
           地势变得更开阔、更平整，风景十分优美。

6. 平地;(尤指)低洼地，浅滩
    A low flat area of uncultivated land, especially an area where the ground is soft and wet, can be referred to as flats or a flat .

    e.g. The salt marshes and mud flats attract large numbers of waterfowl.
           盐碱地和泥滩吸引了大量水鸟。

7. 平面;平坦部分
    You can refer to one of the broad flat surfaces of an object as the flat of that object.

    e.g. He slammed the counter with the flat of his hand.
           他用手掌使劲拍打着柜台。
    e.g. ...eight cloves of garlic crushed with the flat of a knife.
           用刀面拍碎的 8 粒蒜瓣

8. (鞋)平跟的，平底的
    Flat shoes have no heels or very low heels.

    e.g. People wear slacks, sweaters, flat shoes, and all manner of casual attire for travel.
           人们穿着宽松的长裤、运动衫、平底鞋和各式适合旅行的休闲服装。

9. (轮胎、球、气球等)瘪的，没气的
      A flat tyre, ball, or balloon does not have enough air in it.

10. 瘪了的轮胎
      A flat is a tyre that does not have enough air in it.

      e.g. Then, after I finally got back on the highway, I developed a flat.
             后来，我终于回到公路上后，车胎又瘪了。

11. (饮料)无泡的，走了气的
      A drink that is flat is no longer fizzy.

      e.g. Could this really stop the champagne from going flat?
             这真的能让香槟不走气吗？

12. (电池)没电的，电耗光的，电不足的
      A flat battery has lost some or all of its electrical charge.

flat的意思

      e.g. His car alarm had been going off for two days and, as a result, the battery was flat.
             他的汽车报警器连着响了两天，结果电池耗没电了。

13. (扁)平足的
      If you have flat feet, the arches of your feet are too low.

flat的意思

      e.g. The condition of flat feet runs in families.
             平足会在家族中遗传。

14. (拒绝或否认)断然的，坚决的
      A flat denial or refusal is definite and firm, and is unlikely to be changed.

flat的意思

      e.g. The Foreign Ministry has issued a flat denial of any involvement...
             外交部已经坚决否认参与过此事。
      e.g. She is likely to give you a flat refusal.
             她很可能会断然拒绝你。

15. 飞速的;短短的
      If you say that something happened, for example, in ten seconds flat or ten minutes flat, you are emphasizing that it happened surprisingly quickly and only took ten seconds or ten minutes.

      e.g. You're sitting behind an engine that'll move you from 0 to 60mph in six seconds flat...
             您面前的引擎，可以在短短 6 秒钟内速度从 0 提升至每小时 60 英里。
      e.g. I had it all explained to me in two minutes flat.
             短短两分钟内，我让人把一切都给我解释了一下。

16. (比率、价格或百分比)固定的，统一的
      A flat rate, price, or percentage is one that is fixed and which applies in every situation.

flat是什么意思

      e.g. Fees are charged at a flat rate, rather than on a percentage basis...
             费用按固定价格收取，而不是基于百分比收取。
      e.g. Sometimes there's a flat fee for carrying out a particular task...
             有时执行某项特定的任务有固定的价码。

17. (贸易或商业)停滞的，不景气的
      If trade or business is flat, it is slow and inactive, rather than busy and improving or increasing.

      e.g. During the first eight months of this year, sales of big pickups were up 14% while car sales stayed flat...
             今年前 8 个月，大型货车的销售量增加了 14％，而小轿车的销售仍然不景气。
      e.g. For the country overall, house prices have remained flat.
             从全国来说，房屋价格没有多大变化。

18. 枯燥的;无趣的;乏味的
      If you describe something as flat, you mean that it is dull and not exciting or interesting.

      e.g. The past few days have seemed comparatively flat and empty...
             过去这几天似乎比较平淡无聊。
      e.g. It is a long time since a party leader delivered such a dreadfully flat speech as he did yesterday.
             很久没有政党领导人像他昨天那样作如此枯燥无聊的演讲了。

19. (嗓音)平淡的，单调的
      You use flat to describe someone's voice when they are saying something without expressing any emotion.

flat的解释

      e.g. 'Whatever you say,' he said in a deadly flat voice. 'I'll sit here and wait.'...
             “不管你说什么，我都会坐在这里等。”他用一种极为平淡的声音说道。
      e.g. Her voice was flat, with no question or hope in it.
             她的声音平淡，听不出疑虑也感觉不到希望。

20. (用于表示音符的字母后)降半音的，降音的
      Flat is used after a letter representing a musical note to show that the note should be played or sung half a tone lower than the note which otherwise matches that letter. Flat is often represented by the symbol after the letter.

      e.g. ...Schubert's B flat Piano Trio (Opus 99).
             舒伯特降 B 调钢琴三重奏(第 99 号作品)

21. (演唱或乐器)比标准音低的，音偏低的
      If someone sings flat or if a musical instrument is flat, their singing or the instrument is slightly lower in pitch than it should be.

      e.g. Her vocal range was, to say the least of it, limited, and she had a distressing tendency to sing flat.
             至少可以说，她的音域不够宽，而且令人不舒服的是，她总是音高偏低。

22. 非常平坦的;完全平展的
      If you say that something is as flat as a pancake, you are emphasizing that it is completely flat.

      e.g. My home state of Illinois is flat as a pancake...
             我的故乡伊利诺伊州一马平川。

23. 摔倒;跌倒
      If you fall flat on your face, you fall over.

      e.g. A man walked in off the street and fell flat on his face, unconscious.
             一个男人从街上走进来，趴倒在地，不省人事。

24. 失败;不成功
      If an event or attempt falls flat or falls flat on its face, it is unsuccessful.

      e.g. Liz meant it as a joke but it fell flat...
             利兹本想开个玩笑，结果却没有达到效果。
      e.g. If it wasn't for the main actress, Ellen Barkin, the plot would have fallen flat on its face.
             如果不是女主角埃伦·巴尔金的话，整个情节会非常失败。

25. 一文不名;身无分文;一贫如洗
      If you say that you are flat broke, you mean that you have no money at all.

      e.g. Two years later he is flat broke and on the dole.
             两年后，他一贫如洗，靠失业救济金生活。

26. 全速;全力以赴;竭尽全力
      If you do something flat out, you do it as fast or as hard as you can.

flat什么意思

      e.g. Everyone is working flat out to try to trap those responsible...
             每个人都在全力以赴，设法捉住那些罪魁祸首。
      e.g. They hurtled across the line in a flat-out sprint.
             他们拼命冲刺，越过终点线。

27. 完完全全的;确确实实的
      You use flat out to emphasize that something is completely the case.

flat

      e.g. That allegation is a flat-out lie...
             那项指控是彻头彻尾的谎言。
      e.g. They say the industry is flat out lying about the effects of deregulation.
             他们说业界所谓的放宽管制已经取得了成效的说法纯属谎言。

28. 在平地上
      On the flat means on level ground.

      e.g. He had angina and was unable to walk for more than 200 yards on the flat.
             他患有心绞痛，在平地上最多能走 200 码。

29. in a flat spin -> see spin