Gersdorffite
n. 辉砷镍矿
🗣️ 情景例句
Please sit down, Mr. Mark.
请坐吧，马克先生。
I'm not accustomed to that kind of social situation.
我不太习惯那种社交场合。
They put their hands behind their backs, so you can't see their hands.
他们将手放在背后，这样你就看不见他们的手了。