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
Thank you so much,
非常感谢你 。
I wouldn't worry about it, if I were you.
我是你的话，我不会担心的。
He has retired from political life and gone to live abroad!
他已经退出了政界去国外了！”