Marcomizing
不锈钢表面氮化处理
🗣️ 情景例句
That's five points also.
也是五分。
You'll burt yourself, if you don't take care.
你不专心的话，就会烧到你自己。
he stooped to talk to a workman.After they had gone on,
途中，停下来与一个工人交谈，接着他们继续往前走去。