1.短促的敲打(声)
2.爆震声
3.敲击声；敲门（或窗等）声
动词：
1.敲，击，打
及物动词：
1.批评，数落，非难
2.把…撞击成（某种状态）
3.（心）怦怦跳；（膝盖）打哆嗦
4.（尤指因故障）发碰撞声，嘭嘭作响
5.打，凿（洞） 词形变化
- 时态 knocked，knocking，knocks
- 这些动词均有“敲、击”之意。
knock指用拳头或其它器械猛敲或猛打；也指用手轻敲某物。
tap多指慢慢地连续地轻击或轻拍。
rap指用手指或木棒等快速地轻敲或急拍。
pat指用手轻拍以示同情、赞同或爱抚。
- make light, repeated taps on a surface
- the sound of knocking (as on a door or in an engine or bearing)
- a vigorous blow
- the act of hitting vigorously
- sound like a car engine that is firing too early
- deliver a sharp blow or push :
- knock against with force or violence
- rap with the knuckles
- find fault with; express criticism of; point out real or perceived flaws
- negative criticism
- a bad experience