Back channel
[计]反向信道
🧩 词语组成解析
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
He plays games with his daughter every night after work.
下班后他每晚都和他的女儿玩游戏。
We're jumping about in excitement at the discovery.
我们因为这一发现而兴奋得手舞足蹈。
We'll have to get this contract typed as soon as possible.
我们得尽快把契约书打出来。