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 can't wait, to see them!
我恨不得马上见到他们。
When I'm going to buy a TV set next time, I'll buy a portable model.
你有电视节目表吗？新闻与气象节目之后是什么？
Imagine a star up t twenty times larger, brighter, brighter and hotter than our own sun.
设想一下，一颗恒星比我们的太阳还要大，还要亮，还要热20倍，