Ditolyl
联甲苯
🗣️ 情景例句
Nothing.
没有什么。
He tries to button his own shirt,but he can't do it.
他试着扣好他的自己的衬衫，但是他不能做到。
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，