backchannel
noun /ˈbæktʃænl/
/ˈbæktʃænl/
- a secret or unusual way of passing information to other people
- (linguistics) a sound or sign that somebody makes to show that they are listening to the person who is talking to them
单词 | backchannel |
释义 | backchannelnoun /ˈbæktʃænl/ /ˈbæktʃænl/
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