1. 云量：cloud climatology 云气候学 | cloud cover 云量 | cloud droplets 云滴
2. 云层：cloud chamber 云室 | cloud cover 云层 | cloud 浮云状物
3. 云覆盖：盖总成:cover assembly | 云覆盖:cloud cover | 封面型:Front Cover
4. 去除：帽罩:cover | 去除:cloud cover | 遮蔽:cover
1. EDT shows cloud cover in the Mississippi Valley where a strong low pressure system triggered a severe weather outbreak on Thursday.
2. A senior US military official said heavy cloud cover over Libya late last week curtailed allied air strikes.
3. No eye was visible in this image, but the extent of Irene's large cloud cover is seen from eastern Cuba over Hispaniola.
4. A cold front is due to move onshore on Sunday, increasing cloud cover and pushing cooler air into the region.
5. They had been using satellite data which did not in fact measure global cloud cover.
6. Thick cloud cover over India and China obscured the sun when the eclipse began at dawn.
noun
1. the state of the sky when it is covered by clouds
Synonym: cloudiness overcast