Back-scratching
n. 互相利用
🧩 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;
v. 擦伤；划伤；刮痕（scratch的ing形式）
🗣️ 情景例句
Keep quiet about it if you know what's good for you.
什么也别说，免得你自个儿添不自在。
I was born in a little town not far from here.
我出生在离这儿不远的小城市里。
The bottle is empty.
瓶子是空的。