knock 英式发音[nɒk]美式发音[nɑk]
knock基本解释
vi,敲；打；[动力]敲击,同近
knock相关例句和用法
I knocked and knocked but nobody answered..我把门敲了又敲，但无人回应。
knock英英释义
敲；打；敲击英释中释vto hit a door or window with your closed hand to attract the attention of the people inside
knock短语
knock on,撞击撞出；敲击（门、窗）.短语
