Thiaindan
苯并二氢噻吩
🗣️ 情景例句
The little boy held his mother's hand firmly when crossing the street.
那小男孩过马路时紧抓着母亲的手。
The watch is out of order.
这手表出毛病了。
Pay cash for this one and then we'll see what we can do.
这次就请付现金，以后我们再看看