Hardly had she sat when she heard someone knocking at the door.

她一坐下来就听见有人敲门。

youdao

They were wakened by a loud knocking at the door.

他们被一阵很响的敲门声吵醒。

《柯林斯英汉双解大词典》

A week later, on a snowy afternoon, I heard someone knocking at the door.

一个星期后，在一个下雪的午后，我听到有人敲门。

youdao

said that in the night she had been awakened, some men were knocking at the door, and they had been sent by Charles Taylor, and they had given her a huge diamond."

VOA: standard.2010.08.09

It's all seen from her point of view and at a distance And then somebody is knocking at the door and breaking in, and that's Kane And then there's a close-up of Kane leaning over the bed ? Right?

都是从苏珊的角度来拍的,镜头比较远,先是有人敲门,那人闯了进来，是凯恩,然后有个对凯恩,俯在床头的特写,对么？

麻省理工公开课 - 电影哲学课程节选

America has a young workforce, with plenty of skilled people knocking at the door to come in.

ECONOMIST: Lexington

In two seconds flat there was the sound of a person thundering up the stairs and knocking at the door.

CNN: ASIANOW - TIME Asia | Walkabout: Bad & Bitter

There are other opportunities knocking at the door of Chittagong port.

BBC: Bangladesh pins hope on Chittagong port