Polychromemia
血色质增多
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
You must be crazy to go walking in such awful weather.
你一定是头脑发昏了，这么坏的天气还去散步。
'Your sister will be here in less than an hour and we must be at the station to meet her.
“再有不到一个小时你姐姐就要到这儿了，我们得去车站接她。