1) The moon is behind a black cloud.
乌云遮月。
2) The clouds blotted out the moon.
乌云遮住了月亮。
3) The sky was covered with dark clouds.
乌云遮天。
4) Clouds mantled the moon.
云把月亮遮
5) The dark clouds closed over the sun.
乌云遮住了太阳。
6) The sky was overclouded.
天空被乌云所遮
补充资料：乌云
1.黑云。 2.比喻险恶的形势。 3.比喻妇女的黑发。 4.清代称祭祀开始的仪式。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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