Sigmatropic
n. [化]σ移位的,单键转移的
🗣️ 情景例句
And have you had an engineer come in to do an inspection?
你们可有一个工程师来做过检查吗？
The Hilton hotel, please. I have a 10:30 appointment.
请到希尔顿旅馆，十点半我有一个约会。
Master in his own house, he has little idea of when to say boo to a maitre d'hotel.
他们在家可能是主人，但不知道什么时候才能对酒店的经理表示不满。