英汉词典

1. 第八的
    The eighth item in a series is the one that you count as number eight.

eighth的意思

    e.g. ...the eighth prime minister of India.
           印度第八任总理

2. 八分之一
    An eighth is one of eight equal parts of something.

    e.g. The Kuban produces an eighth of Russia's grain, meat and milk.
           库班地区出产俄罗斯1/8的粮食、肉类和牛奶。