Singles
n. 单打比赛
🗣️ 情景例句
Would you tell me something about your family?
请告诉我一些你的家庭情况，好吗？
Remember me to your grandfather please.
请替我问候你的祖父。
It is fairly clear that sleeping period must have some function,
很清楚，睡眠必然具有某种作用。