knock
英 /nɔk/
中文释义
vi.&vt.&n.敲，击，打
To tap lightly on a surface, usually to get someone's attention.
常用搭配
- knock on the door敲门
- knock down撞倒
- knock over打翻
例句
- I heard someone knock on the door.我听到有人敲门。
- Please knock before entering the office.进办公室前请先敲门。
To tap lightly on a surface, usually to get someone's attention.