Hexacene
[化] 并六苯
🗣️ 情景例句
I have to return this book to the library.
我得把书还回图书馆了。
Would you mind handing me that cup?
请把那个杯子递给我，好吗？
Uncle Wang, may I ask you some questions, please?
王大叔，我可以问你一些问题吗？