to knock的用法和樣例：
例句
- The enemy charged up the mountain, attempting to knock out our forces.
敵人向山上衝鋒，企圖把我們的兵力摧毀掉。 - Even though they weren't expecting us, they managed to knock up a marvellous meal.
他們雖然沒想到我們要來，但還是設法匆匆做好一頓豐盛的飯。 - I was able to knock their price down to $1.
我把價格壓到一美元。 - I managed to knock his price/him down (from 500 to 450).
我設法壓了他的價(從500英鎊減到450英鎊).
