The market might abandon the stock, and knock down its price.

商场可能会清理库存，降低价格。

Please don't knock down all those cans.

请不要敲那些罐头。

They knock down all the pins, but what they don't do is they don't smile after they knock down the pins.

他们撞倒了所有的保龄球木瓶，但他们撞倒后没有微笑。

The man is knock down by the bicycle.

这个男人被自行车撞倒了。

McCain was quick to knock down the lie.

麦凯恩迅速的戳穿了这个谎言。