The axle connects to the outer arms of the Wheel, which begin to rotate at a speed of 1/8 of a revolution per minute.

车轴连接到这个车轮的外臂，外臂开始以每分钟1/8转的速度旋转。

youdao

Only 8 of the 28 starters completed the course.

28名参赛者中，只有8人跑完了全程。

《牛津词典》

Discipline techniques vary by education level: 8% of those with a postgraduate degree say they often beat their children, compared with 22% of those with a high school degree or less.

管教孩子的方法因教育程度而异：在有研究生学历的人中，8%的人说他们经常打孩子。相比之下，高中及以下学历的人中有22%会这么做。

youdao

Many of the caterpillars live on the leaves of forest trees such as the Dahoma, which can rise more than 8 meters.

VOA: special.2009.01.27

So we started with 10 valence electrons, we used up 8 of those electrons in terms of making bonds.

我们一开始有十个价电子，然后用掉了八个电子来成键。

麻省理工公开课 - 化学原理课程节选

It's that the pounds of gold plus the pounds 8 of silver plus the pounds of raisins is no greater than eight.

就是金的磅数加上银的磅数,加上葡萄干的磅数不大于,所以我已经找到了。

麻省理工公开课 - 计算机科学及编程导论课程节选