whoofn.(突然排气似的)呼哧声whopron.谁abbr.世界卫生组织(=World Health Organization)Who is the publisher?等待时间Who is in this movie?计时控制圆盘Who's pinched my pen?时间名词Who's in next to bat?实际时间Who upsets my former life是谁打翻前世柜Who won the election?超时Who stole the donkey?时距曲线,时距图Who the blazes is he?时间率Who started the fire?时间均值Who 's been stirring?n.考勤簿；工作时间记录簿

1. It is hard to tell who is who in the parade.
   在游行队伍中很难分清谁是谁。