Reacton
[医] 反应单位
🗣️ 情景例句
It's called
它的题目是
Sorry, She is out. Shall I take a message?
抱歉，她外出了，你要留口信吗？
and the more difficult it is, the more highly it is regarded.
他们认为， 道路愈艰险愈带劲儿。