Xanthoxylin
[医] 花椒素, 秦椒素
🗣️ 情景例句
Sir, this offer will expire this week.
先生，这次特价这个礼拜就结束了。
What is this?
这是什么？
How would you go to Beijing, by air or by train?
你怎样去北京，是乘飞机还是坐火车？