seven

七、七个

Three plus four equals seven, as every child learns early.

三加四等于七，这是每个孩子很早就学会的。

七点

The train leaves at seven, so don't be late.

火车七点开，别迟到。

七岁

She started learning the violin at seven.

她七岁开始学小提琴。

七号

The player wearing seven scored twice in the second half.

穿七号球衣的球员在下半场进了两球。

七、七个

We stayed in that small town for seven days.

我们在那个小镇待了七天。