Quaterisation
季铵化反应
🗣️ 情景例句
That's what it is.
的确是如此。
The raceis got by running.
赛跑要靠奔跑来赢得。
These days, people who do manual work often receive far more money than people who work in offices.
如今，从事体力劳动的人的收入一般要比坐办公室的人高出许多。