Q.q.h.
[医] 每四小时
🗣️ 情景例句
His family is a nuclear family with three generations living together under one roof.
他的家庭是三代同堂住在同一屋檐下。
I'm flying home on Sunday afternoon.
我星期四下午乘飞机回家。
She's sitting under the tree.
她正在树荫下坐着。