Dark clouds gather rain, hidden trouble gathering to mischief.
乌云聚积要下雨，隐患积聚要出祸。
It's bound to rain. Look! The clouds are gathering quickly.
肯定要下雨。看！乌云正在迅速地积聚。
The clouds are gathering in the sky. It is going to rain.
云彩正在天空聚集，天要下雨了。
Look, the clouds are gathering. It is going to rain.
看，云正在聚集，要下雨了。
Look, the clouds are gathering. It's going to rain.
看，云正在集聚，要下雨了。
Gathering clouds usually means rain or snow.
不断堆积的乌云意味着要降雨或者下雪。
With all these clouds gathering it's as sure as death to rain before evening.
天上的云层已经这么厚了，傍晚前一定会下雨的。
I see rain clouds are gathering.
我看见天空正乌云密布。
I see rain clouds are gathering.
我看见天空正乌云密布。
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