Ferulaldehyde
阿魏醛
🗣️ 情景例句
My visa is multi-entry; it allows me to exit the country and then re-enter, as ofter as I like.
我的签证是往返签证，我可以随便进出这个国家。
Don't open your book.
别打开书。
I appreciate your help.
我感谢你的帮助。