Cementation stell
[建] 渗碳钢
🧩 词语组成解析
n. 水泥接合, 黏结, 胶结\\n[医] 粘固[作用]
(牲畜的)保护围场
🗣️ 情景例句
Just make the few changes I suggested and your letter will be perfect!
只要改动我提到的个别地方，你的信就会很完美了。
He hasn't done any worthwhile work in five years.
这五年来他没做过一件正经事。
I have been putting on weight.
我开始发胖了。