Backchannel
（传递消息的）秘密渠道, 特殊途径
🗣️ 情景例句
... my slogan is I care.
……我的口号是， 我关心 。
Joseph likes to listen to music.
约瑟夫喜欢听音乐。
Here are the two originals of the contract we prepared.
这是我们准备好的两份合同正本。