Sigmatropic
n. [化]σ移位的,单键转移的
🗣️ 情景例句
I had a million things to do today.
我今天有成千上万的事要做。
It really hurts.
可真疼。
Sometimes the secrecy goes to such an extent that the whole nature of the research cannot be mentioned.
有时，保密竟达到了这样的程度，即连研究工作的整个性质都不准提及。