I shut the door noiselessly behind me.

我把身后的门轻轻带上。

The sea crept noiselessly up the shore.

海水悄无声息地上海岸。

The cat walked noiselessly through the grass.

猫不声不响地穿过了草坪。

Noiselessly she went along the upper corridor.

她轻轻地顺着楼上走廊走。

I felt that it would rain forever, noiselessly.

我觉得老天会不声不响地永远下着雨。