Platnum
(=Platnam)普拉特南耐蚀阀座合金, 普拉特纳姆镍铜合金
🗣️ 情景例句
Well, why don't you tell us about that, Michelle?
那好，能否给我们讲一讲 Michelle？
When I came in, he was reading.
当我进来的时候，他在读书。
How long did it take you to accomplish this complicated job?
你花了多久才作完这复杂的活儿？