1. 云;云团
    A cloud is a mass of water vapour that floats in the sky. Clouds are usually white or grey in colour.

    e.g. ...the varied shapes of the clouds...
           云朵各种各样的形状
    e.g. The sky was almost entirely obscured by cloud.
           天空几乎完全被云所遮蔽。

2. (烟雾、尘土等的)一团
    A cloud of something such as smoke or dust is a mass of it floating in the air.

    e.g. The hens darted away on all sides, raising a cloud of dust.
           一群母鸡四处乱窜，搅起一团尘土。

3. 把…搞糊涂;使难以理解；使无法正确判断
    If you say that something clouds your view of a situation, you mean that it makes you unable to understand the situation or judge it properly.

    e.g. Perhaps anger had clouded his vision, perhaps his judgment had been faulty...
           可能是愤怒蒙蔽了他的眼睛，也可能是他判断有误。
    e.g. In his latter years religious mania clouded his mind.
           晚年的时候，对宗教的狂热让他丧失心智。

4. 破坏;给…蒙上阴影
    If you say that something clouds a situation, you mean that it makes it unpleasant.

    e.g. The atmosphere has already been clouded by the BJP's anger at the media.
           印度人民党怒斥媒体，已经破坏了气氛。

5. (眼神或脸色)阴沉，忧郁；使看起来阴沉（或忧郁）
    If your eyes or face cloud or if sadness or anger clouds them, your eyes or your face suddenly show sadness or anger.

    e.g. Trish's face clouded with disappointment...
           翠茜一脸失望。
    e.g. As he looked at Katherine, great sorrow clouded his eyes.
           他看着凯瑟琳，满眼忧伤。

6. (镜子)模糊不清;(使)起雾
    If glass clouds or if moisture clouds it, tiny drops of water cover the glass, making it difficult to see through.

    e.g. The mirror clouded beside her cheek...
           她面颊边的镜子变得模糊不清。
    e.g. I run the water very hot, clouding the mirror.
           我把水开得很热，水汽模糊了镜面。

7. 心不在焉;耽于空想
    If you say that someone has their head in the clouds, you are criticizing them because they are ignoring or are unaware of the problems associated with a situation.

8. 极为快乐;乐不可支
    If you say that someone is on cloud nine, you are emphasizing that they are very happy.

    e.g. When Michael was born I was on cloud nine.
           迈克尔出生的时候，我都乐得找不着北了。

9. 遭嫌弃；被贬低
    If someone is under a cloud, people have a poor opinion of them because of something they have done.

    e.g. The military are under a cloud for killing civilians while breaking up a demonstration.
           军方因在平息示威活动时杀死了无辜平民而备受指责。

10. every cloud has a silver lining -> see silver lining

相关词组：cloud over