a.

1. 多云的，阴天的
   The sky was cloudy, so I took my umbrella.

   天阴，所以我带了把伞。

2. 云的；云一般的
3. 阴郁的，不愉快的
   a cloudy mood

   阴郁的情绪

4. 模糊不清的，含糊的
   cloudy ideas

   模糊的想法

5. 混浊的
   The water from the faucet was cloudy.

   水龙头里流出的水很混浊。

6. 有云纹的

adj.

1. (of the sky or weather) covered with or characterized by clouds.
2. (of a liquid) not transparent or clear.
3. uncertain or unclear.