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
Great job!
干得好，干得妙！
My brother is two years younger than I am.
我的兄弟比我年轻2年。
Tomorrow is christmas Eve, and my father and I went to choose a Christmas tree today.
明天是圣诞节前夜，今天我和父亲去选圣诞树。