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。
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。
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。
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.