短語(yǔ)詞組短語(yǔ)hammer away at 努力做;不懈地致力于;反復(fù)強(qiáng)調(diào)hammer away at vtr 一直努力做Hammer at a typewriter 在打字機(jī)上打字to hammer at 敲打Hammer at a door 用手杖或拳頭敲門(mén)to beat and hammer at 敲打 返回 hammer at