Arborine
山柑子碱, 山小桔碱
🗣️ 情景例句
Friends, teachers....
朋友 老师……
Yes. And another thing, would you mind not making long distance calls?
是的。还有一件事，请你别打长途电话了，好吗？
This is because the surface of the earth is not flat but round.
因为地球表面不是平的，而是圆的。