Xanthyrone
丙烯基吡喃酮
🗣️ 情景例句
Language is for the exchange of idea, for communication.
语言是用来交换思想，用来交流的。
After dinner I read a magazine and made some telephone calls.
在晚饭以后我读一本杂志和打了一些电话。
Yes. B-double O-K, book.
好的。B-双写O-K，book（书）。