Construction(al) material(s)
[化] 结构材料
🗣️ 情景例句
You're a wonderful granddaughter.
真是个好孙女。
You are useless!
你真没用！
Once you have done this, you will quickly become a useful member of the teazm.
一旦你这样做了，你很快就会成为工作班子里有用的员。