fortieth

num.第四十

n.四十分之一

This city is close to the fortieth parallel of north latitude. 这个城市靠近北纬40度。

Man' s brain usually weighs about three pounds or a little more, and this is about one-fortieth the weight of his whole body weight. 人类的大脑通常重约三磅或更多一点，大约是其体重的四十分之一。