Quaternarization
[化] 季铵化作用; 门秀金反应
🗣️ 情景例句
Get busy with your famous apple pie.
快做你拿手的苹果派吧。
The police crept up from behind and took the gangster by surprise.
警察悄悄从背后绕过去，出其不意地将歹徒逮捕。
The weather can be quite warm in autumn.
秋天，气候十分暖和。