Quaternization
(=quaternarization)季铵化作用, 成季碱反应
🗣️ 情景例句
Am I making my self clerar?
我讲的清楚吗？
An ass endures his burden but not more than his burden.
驴子能负重，但不堪超过力之所及。
Yes, there must be over two hundred here.
是呀，这儿一定有200多张。