Trifyl
三氟甲磺酰基
🗣️ 情景例句
Who is it?
是谁呀？
No. It's only a five-minute walk.
不远，只要走5分钟。
During my years in school, Annie sat beside me in every class.
在我求学期间，安妮每堂课都坐在我身旁。