1. (忍住不哭或表示不赞成时)抽鼻子
    When you sniff, you breathe in air through your nose hard enough to make a sound, for example when you are trying not to cry, or in order to show disapproval.

    e.g. She wiped her face and sniffed loudly...
           她抹了一把脸，很响地抽着鼻子。
    e.g. Moira looked around and sniffed. 'This place badly needs a decorator.'...
           莫伊拉环顾四周，抽了抽鼻子。“这个地方太需要有人来装修一下了。”

2. 闻;嗅
    If you sniff something or sniff at it, you smell it by sniffing.

    e.g. Suddenly, he stopped and sniffed the air...
           他突然停下来，闻了闻空气里的味道。
    e.g. She sniffed at it suspiciously.
           她怀疑地闻了闻。

3. 嗤之以鼻地表示;轻蔑地说
    You can use sniff to indicate that someone says something in a way that shows their disapproval or contempt.

sniff

    e.g. 'Tourists!' she sniffed.
           她轻蔑地说道：“游客!”

4. 轻视;蔑视
    If you say that something is not to be sniffed at, you think it is very good or worth having. If someone sniffs at something, they do not think it is good enough, or they express their contempt for it.

    e.g. The salary was not to be sniffed at either...
           这份工资也不容小觑。
    e.g. Foreign Office sources sniffed at reports that British troops might be sent.
           外交部消息人士对有可能派出英国军队的报道不屑一顾。

5. 用鼻子吸入(胶毒等)
    If someone sniffs a substance such as glue, they deliberately breathe in the substance or the gases from it as a drug.

    e.g. He felt light-headed, as if he'd sniffed glue.
           他觉得晕乎乎的，好像吸了胶毒一样。

6. 嗅到;感觉到
    If you get a sniff of something, you learn or guess that it might be happening or might be near.

    e.g. You know what they'll be like if they get a sniff of a murder investigation...
           你知道如果他们嗅到马上会进行谋杀调查会怎么样。
    e.g. Have the Press got a sniff yet?...
           新闻界嗅到了一点消息没有？

7. 一丝;一点儿
    If you say that someone has not had a sniff of something, you mean that they have not had even a small chance of getting it.

    e.g. Winterton has never had a sniff of a government job in his entire twenty-one years in parliament.
           在国会的整整21年里，温特顿没有得到过任何在政府里工作的机会。

相关词组：sniff aroundsniff outsniff round