Halimide
[化] 氯化对十二烷基苄三甲铵
🗣️ 情景例句
Speaking of school, how are your grades this term?
谈到学业，你这学期的成绩如何？
Do you go on picnics?
你常去郊游吗？
Custom has not commonly been regarded as a subject of any great moment.
风俗一般未被认为是什么重要的课题。