Alkylammonium
烷基铵
🗣️ 情景例句
What is your regular practice concerning the terms of payment?
你们一般采用什么付款方式？
I feel the same way.
我有同感。
As long ago as 1809, the Swedish Parliament introduced a scheme to safeguard the interest of the individual.
早在1809年，瑞典论会就建立一个保护公民利益的制度。