Acetylnaphthylamine
乙酰萘胺
🗣️ 情景例句
He's constantly disturbing me.
她老是打扰我。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。
Don't be so modest.
别谦虚了。