Thioxanthone
噻吨酮
🗣️ 情景例句
Our pleasure.
非常荣幸。
I have two days off a week.
我一周休息两天。
It was beginning to get dark. I think we'd best stay the night here, I said.
天开始变黑。“我看我们最好在这里过夜，”我说，