The rain poured down.

雨瓢泼而下。

《牛津词典》

Just as they got within its shelter the storm burst and the rain poured down.

他们刚到屋檐下，风暴就来了，大雨倾盆而下。

youdao

The Princess now stood and wept, the swineherd scolded, and the rain poured down.

公主站在那儿哭了起来，猪倌骂了她一声，大雨倾盆而下。

youdao

Some 1,500 people attended the two-hour ceremony under the soaring white dome of the basilica, as rain poured down outside.

VOA: standard.2009.08.29

When Typhoon Ketsana hit Manila this year, the crowded city's planners were stunned at the amount of rain that poured down in a short time.

VOA: standard.2009.12.21

He insisted I join him under his brolly as the rain poured down - no mean feat to get under a brolly with Cyril Smith as I too am not slight in build.

BBC: Sir Cyril Smith: Your memories