African dung beetles are really good at rolling large balls in straight lines.

非洲屎壳郎真的很擅长在直线上滚动大球。

Several of these have been variations on Bhaskara's over-balanced wheel with rolling balls or weights on swinging arms.

有几个是基于婆什伽罗超平衡滚轮衍生而来的在摆臂上装滚动的球或是有重量的东西。

So if these beetles were rolling dung balls around, where did that poop come from?

所以如果这些甲虫在周围滚动粪球，那么这些便便是 从哪里来的？