Dioxan
n. 二氧杂环己烷（用作溶剂）
🗣️ 情景例句
That's nothing at all.
不用客气。
He who knows most speaks least.
懂得多的说得少。
'Will you be spending your holidays abroad this year?' I asked.
“您今年去国外度假吗？”我又问。