translation.en: So this dung pat was actually -- well, it was a dung pat 15 minutes before this photograph was taken, and we think it's the intense competition that makes the beetles so well-adapted to rolling balls of dung.
translation.zh: 所以这个粪堆实际上——好吧，在照片拍摄的 15分钟之前它还是一个粪堆， 我们认为围绕粪堆的激烈斗争 造就了蜣螂非凡的 滚粪球的能力。