translation.en: What we do is put very small GPS collars on these animals to study how they move together, and what this has to do with their social structure.
translation.zh: 我们所做的就是把很小的 GPS 项圈 放在这些动物身上 来研究他们是如何一起行动的， 同时这与它们的社会结构有什么关系。