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
You were four or five years old, I think.
当时你才四、五岁 我想。
If his plan works, he'll earn 100 million in 10 years.
如果按照他的计划做，十年就能挣到一亿元了。
The bull was busy with the matador at the time,
当时那公牛正忙于对付斗牛士，