The harvest moon is full and round, and slightly misted by a passing cloud.

月儿圆圆的，还被偶尔经过的云蒙上一层薄薄的轻雾。

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They dim immediately when it's sunny and brighten when a passing cloud blocks the sun.

当阳光充足时它们立刻变暗，而当行云遮住太阳时又会变亮。

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She was being bathed and diapered and dressed and fed, and for the last several years, she looked at me, her only son, as she might have at a passing cloud.

她洗澡、穿衣、吃饭都要靠人帮忙，而且还要用尿布，而在最后几年里，她看着我——她唯一的儿子，眼神就像注视天上飘过的浮云一般。

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Businesses are tired of hearing the tech industry squawk about whether this or that is a managed service or a faux cloud or a virtualized cumulonimbus cluster or a passing shower or black cloud of doom.

FORBES: The New and Dangerous Threat to Cloud Computing

People who have observed a funnel cloud passing overhead have described the sound as similar to buzzing bees or a rushing waterfall-like sound.

BBC: Funnel clouds, twisters, tornados: What are they?

Or because of the heedless passing of a cloud.

NEWYORKER: Lake Water