| 例句 |
We heard a knock in the engine.我们听到发动机发出爆震声。He knocked in a run in the second inning with a double to left field.他在第二局击出一个左外野二垒打，并使跑垒员跑垒得分。He has taken plenty of hard knocks in his life.他一生经历了很多艰辛。There was a small knock in the engine.发动机发出一声轻轻的爆响。We have to take certain knocks in life.我们在一生中总得遭受某些挫折。 |