通话按钮
/ˈpʊʃtətˈɔːk ˈswɪtʃ/
n
English: push-to-talk switch · 通话按钮
释义：When this button is pressed, voice messages can be sent from one CB unit to another; when it is released, messages can be received.
English: push-to-talk switch · 通话按钮