Xanthopone
乙基黄原酸锌
🗣️ 情景例句
How was your flight?
旅途愉快吗？
What sort of guarantee do you offer on your product?
你们提供什么样的产品保证呢？
We've got some cheaper ones in the back room.
后面房间里有一些比较便宜的。