Quaternarization
[化] 季铵化作用; 门秀金反应
🗣️ 情景例句
She makes a good living as an author.
她靠当作家过着优裕的生活。
I can read.
我会读。
Thanks. Oh, this is too small. Do you have a big piece, please?
谢谢。噢，这张太小了。请问你有一张大的吗？