例句：
The forecast said there would be sunny intervals and showers.
预报间晴，有阵雨。
There will be rain at first, with sunny spells later.
开始会有雨，雨后间晴。
The sky is cloudy, and looks like rain.
天空阴沉沉的`，像是要下雨。
It was cloudy yesterday.
昨天是阴天。
A nasty incident was prevented by the timely arrival of the police.
警察的及时到来阻止了一次严重事故。