which is which

phr

• ① 哪一个是哪一个
  • The twins are so much alike that you cannot tell which is which.那对双胞胎这么相像,以致于你分不清哪一个是哪一个。
  • "Their names are Betty and Julie."－"Which is which?"「他们的名字是蓓蒂跟朱丽。」「哪一个是蓓蒂,哪一个是朱丽?」