I moved from animals to plants, and then to rocks.

我从动物转向植物，然后转向岩石。

youdao

Then over many more years, the Phosphorus-rich rocks of the new land begin to erode and the cycle continues.

然后过了许多年，含磷丰富的新陆地岩石开始被侵蚀，而且循环还在继续。

youdao

The motion of a pendulum rocks this device so that it catches and then releases each tooth of the escape wheel, in turn allowing it to turn a precise amount.

钟摆的运动使这个装置晃动，如此一来这个装置能抓住擒纵轮的每一个齿，随后又将其释放，因而使其精确转动一段距离。

youdao

A robot would then pick up rocks and soil, and send them back to earth for testing.

VOA: special.2010.05.25

They soak it for eight or nine hours and then they begin to scrub and beat the laundry against rocks.

NPR: Mumbai's Dhobi Toil With Laundry

Send a bunch of small rovers to look around different spots of Mars to find the best samples and then design a system to collect and return those rocks.

MSN: Astronauts may help bring samples back from Mars

There might not be any more interesting rocks to find and then where will we be?

FORBES: But Every Generation Does Indeed Exhaust Its Mineral Reserves