moving in two different directions; allowing something to move in two different directions 双行的;双向的 two-way traffic 双向交通 two-way trade 双向贸易 a two-way switch (= that allows electric current to be turned on or off from either of two points) 双路开关
(of communication between people )人际交流 needing equal effort from both people or groups involved 相互的;彼此的;有来有往的 (of radio equipment, etc. )无线电设备等 used both for sending and receiving signals 收发两用的 a two-way radio 双向无线电(收发两用)