Dibutyl sulfone
[化] 二丁砜
🧩 词语组成解析
[机] 二丁基
n. <美> = sulphone
🗣️ 情景例句
There was no way he could solve the problem.
他根本解决不了这个问题。
He has been to America.
他曾去过美国。[表示曾经有过的经验]
I simply don't know. He may have plans, but he hasn't yet spoken to me about them.
我一点儿都不知道。他也许有计划，但他还没跟我谈他的想法呢。