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
I need to cancel that. We have had a last minute change of plans.
我要取消预约，我们临时改变计划了。
He has a book.
他有一本书。
What languages did they speak?
他们讲什么语言？