She has seven cats at home.
她家里有七只猫。
We will meet at seven o'clock.
我们将在七点见面。
There are seven days in a week.
一周有七天。
He bought seven apples from the market.
他从市场买了七个苹果。
The movie starts at seven pm.
电影在晚上七点开始。
She is seven years old.
她七岁了。
They have seven children in their family.
他们家有七个孩子。
The book has seven chapters.
这本书有七章。
He ran seven miles this morning.
他今天早上跑了七英里。
We need seven volunteers for the event.
我们需要七个志愿者参加活动。
seven seas
世界七大洋
seven deadly sins
七宗罪
seven year itch
七年之痒
on cloud seven
欣喜若狂；快乐至极
复数: sevens;
