by twos

英 美
  • 每两人;成双地;两个地
  • by prep.靠近;通过;被;经由;不迟于adv.经过;在旁边;靠近
    1. The children went in two by two.
      孩子们两个两个地进去。
    2. Its members fell off one by one.
      它的成员一个个地退出了。