Mesulphen
二甲基硫蒽
🗣️ 情景例句
We're going to take it slow first.
开头我们要做慢一点。
I can't imagine why.
我想不通为什么。
In his youth, his father and grandfather often told him stories about their family history.
年轻时，他的父亲和祖父常常同他说起他们的家史。