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1·It is a grey, cloudy sky.

天空灰暗多云。

2·The cloudy sky looks unsettled;

阴沉的天空在犹豫；

3·The cloudy sky was followed by rain.

天空乌云密布，接着下起雨来。

4·Cloudy sky drove the bathers off the beach.

阴霾的天空把海滩上的游客都赶跑了。

5·In that cloudy sky only one lone star can be seen.

的天上，只能看到孤零零的一颗星星。

6·In that cloudy sky only one lone star could be seen.

在那多云的天空中，只能看见孤零零的一颗星。

7·Only a tiny patch of blue was visible in the cloudy sky.

多云的天空中只见到一小块儿湛蓝。 。

8·Sometimes cloudy sky may deter a man from undertaking a journey.

阴暗天色有时使人不敢启程。

9·Are beginning to become cloudy sky, how the tears will clear.

蓝天都开始变得浑浊，眼泪怎么会清澈。

10·The clear and the cloudy sky are studied in this paper, respectively.

本文针对晴空天空背景以及有云天空背景分别展开研究。