Quaternization
(=quaternarization)季铵化作用, 成季碱反应
🗣️ 情景例句
and I felt I should spend more time
我觉得应该多花些时间
No, she isn't.
不，她不是。
when a significant number of people are living permanently in space.
如果有相当数量的人永久性地住在太空，