Tosyl
[化] 甲苯磺酰基
🗣️ 情景例句
How good are you at using chopsticks?
你筷子用得怎么样？
The longest way round is the shortest way home.
绕道似最远，归程是捷径。
Yet to both classes, the need of an alternative outlook,
然而对这两种人来说，都需要换一换脑子，