例句
Please knock on the door before you come in.
进来之前请先敲门。
Strong winds can knock down trees, causing serious disruption to transport networks in urban areas.
强风可能刮倒树木，严重扰乱城市地区的交通网络。
常用搭配
- knock on the door｜敲门
- knock something over｜碰倒某物
- knock down｜撞倒；拆除
- a loud knock｜响亮的敲击声
用法提示
词首k不发音；敲门用knock on或at the door。