倾盆大雨

I was proceeding through torrents of rain.

我在倾大雨中前进。

We were walking back from the bus stop when suddenly the heavens opened.

我们正从公共汽车站往回走，突然下起了倾大雨。

It was pouring all night.

整夜下着倾大雨。

It poured for four days.

下了四天倾大雨。