Back coat
底面涂层
🧩 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;
coat
[kəut]
n. 上衣，外套;
vt. 给…穿上上衣[外套];盖上;
🗣️ 情景例句
No problems. Here's your passport, and here's your money. Have a nice day, Mr. Lu.
没问题。这是您的护照，还有您的钱。祝您愉快，陆先生。
I'm two years younger than my sister.
我比我姐小两岁。
It's the library's. Please be more careful from now on!
“是图书馆的书。从现在起请你倍加小心！”