No sooner had I sat down than there was a loud knock on the door.

我刚坐下就有人大声敲门。

《牛津词典》

The elephant has such great strength that he can knock down a man with it.

大象力气很大，可以打倒一个人。

youdao

In 2014, City Hall developed a plan to knock down the building and replace it with affordable housing.

2014年，市政厅制定了一项计划——将该建筑拆除，代之以经济适用房。

youdao

Yet it is the 1990s that have seen executive pay soar to unprecedented levels, as shown in a study by the Institute for Policy Studies and United for a Fair Economy (see top chart), with knock-on benefits further down the senior professional food chain.

ECONOMIST: Cutting the cookie