她听到背后有人嘲笑她；

She heard laughter behind her;

youdao

当我发现背后有人蹑手蹑脚地紧跟着我时，我吓的要命。

I was scared to death when I found somebody creeping close on my heels.

youdao

他突然听到背后有响声，便立刻意识到车库里还有人。

Suddenly he heard sound back, and realized immediately that someone still in the garage.

youdao

他突然听到背后有响声，便立刻意识到车库里还有人。

Suddenly he heard sound back, and realized immediately that someone still in the garage.

youdao