下了好大一场雨 翻译为英语

It rained heavily.

It rained heavily.
It rained hard.
It rained cats and dogs.这句是谚语，就是倾盆大雨的意思

a heavy/hard rain 这个是词组

看你需要哪个咯

It rians heavily.

大雨的最标准说法是downpour
最好是It really has been a downpour.

Under a big rain

It rained heavily!
There was a heavy rain!