Then, the system acts on the world though pumps, motors, heating elements, and other physical actuators.

然后，系统通过泵、电机、加热元件和其他物理执行器作用于世界。

I cannot afford a motor pump and I cannot fetch it with my bare hands so only my cattle drink from it.

我买不起马达水泵，也不能赤手空拳地去取水，只有我的牛才可以喝到一点河水。