in sheets

Prepositional phrase

Of rain or other precipitation, very hard.

Japanese Meaning

雨や他の降水が猛烈に降る様子 / 非常に激しい降り方

The rain was coming down in sheets, making it impossible to see more than a few feet ahead.

雨が土砂降りに降り、数フィート先が見えないほどでした。

Sense（1）

Of rain or other precipitation, very hard.

The rain was pouring down in sheets.