old hat片语KK [old hæt] /oʊld hæt/发音片语1过时的、老套的、陈旧的口语Those special effects look old hat compared with today's movies.跟现在的电影比,那些特效看起来已经过时了。2司空见惯、不足为奇口语Working night shifts is old hat to her by now.值夜班对她来说早已是司空见惯的事。用这个字练口说→