a. 双行道的, 两路的, 相互的
在线英汉词典
two-way的短语、例句：
two-way
adj [usu attrib 通常作定语]
(a) (of a switch) allowing electric current to be turned on or off from either of two points （指开关）双路的, 双向的.
(b) (of a road or street) in which traffic travels in both directions （指道路）双行的, 双向的.
(c) (of traffic) in lanes travelling in both directions （指交通）双向流动的.
(d) (of radio equipment, etc) for sending and receiving signals（指无线电设备等）收发两用的.
(e) (of communication between people, etc) operating in both directions （指人等之间的交流）双向进行的, 有来有往的
a ,two-way `process 双向交往. For the uses of two see the examples at five. 关於two的 用法见five词条中的示例.
two-way