Phenylnaphthylamine
苯基萘基胺
🗣️ 情景例句
What events are happening on campus?
校园里有什么事件发生？
Is it convenient to you if I come at 6 p.m.?
如果我下午6点来拜访你，方便吗？
good-tempered elephant who will give many years of loyal service.
脾气温顺、能忠实为人服务多年的大象。