I was wakened by a knock at the door.

敲门声把我吵醒了。

《牛津词典》

I was in my flannel pajamas, ready for bed, when a knock came at the door.

我穿着棉绒睡衣正要休息，这时门外响起了一阵敲门声。

youdao

I had gone downstairs at three o 'clock to fetch a jug of water; and was passing through the hall with it in my hand, when a sharp knock at the front door made me jump.

我在三点钟下楼去拿一罐水，正在提着水罐走过大厅时，这时前门一阵猛敲使我吓一跳。

youdao

I've heard the knock of the secret police at my door in the middle of the night.

CENTERFORSECURITYPOLICY: Monica Crowley, Mightier Pen 2012