英汉词典

1. 第七
    The seventh item in a series is the one that you count as number seven.

    e.g. I was the seventh child in a family of 11.
           我在家里的 11 个孩子中排行老七。

2. 七分之一
    A seventh is one of seven equal parts of something.

u0039u0031u0031u67E5u8BE2u00B7u82F1u8BEDu5355u8BCD

    e.g. A million people died, a seventh of the population.
           共有 100 万人丧生，占总人口的七分之一。