Tosyl
[化] 甲苯磺酰基
🗣️ 情景例句
Oh yes, Harry.
去过了， Harry。
May I have a customs declaration form, please?
请给一份海关申报表好吗？
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it.
它在接近终点时，冲下了山坡，驾驶员费了好大劲才把车停下来。