Terebinthone
氧羊毛甾二烯酸
🗣️ 情景例句
He's living on easy street.
他过得很富裕。
Yes,you are.
是的，你是。
Imagine a pen attached to the weight in such a way that its point rests upon a piece of paper on the floor.
假定把一支笔拴在重物上，笔尖落在地板上的一张纸上，