Quaternization
(=quaternarization)季铵化作用, 成季碱反应
🗣️ 情景例句
It is nice of you to invite me to the party tonight.
你真好，邀请我参加今晚的聚会。
Won't you come in, please?
请进来好吗？
and then there are three thousand million other Milky Ways, or galaxies, in the universe.
况且在宇宙中还有30亿个天河，即银河系。