Somebody was knocking on the window.

有人在敲窗户。

《牛津词典》

All at once there was someone knocking on the door.

突然有人敲门。

《柯林斯英汉双解大词典》

Someone's knocking on the door.

有人在敲门。

youdao

But in fact, if you just run your fingers again and again over this floppy disk you are disorienting those particles or knocking them off perhaps altogether, depending on the medium.

事实上，如果你把手指一次次的在磁盘上面滑动,这些粒子就会变的无极性,或者把它们整个搞坏，而这取决于媒介。

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The tasks ranged from registering voters to knocking on doors in the blazing south Florida sun.

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Technically, the SPY will be knocking on the door of bigger resistance very soon.

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Shortly afterwards, Eastmond's high kick caused problems for the Wigan defence with Cameron Phelps knocking on.

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