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
It's Grandma's recipe.
这是奶奶的配方。
Is there any way you could bring it in to be looked at?
你有没有办法把它带过来，让我们看一看？
It's very smart.Short skirts are in fashion now.
它很时髦。短裙现在很流行。