They are wild animals that have never been handled. 它们是人类从未应对过的野生动物

256. and don't squeeze too tight.
     也别挤压河豚
257. You know, the divers, they are very experienced,
     潜水员实际上经验丰富
258. but a part of me is always very worried.
     但我总是会有些担心
259. They are wild animals that have never been handled.
     它们是人类从未应对过的野生动物
260. It's really quite a risky thing that they're undertaking here.
     救援队这项工作真的很冒险
261. There's a good chance the dolphin might die.
     河豚很有可能活不下来
262. But, of course, they're balancing that against the fact
     但如果不尝试救援

来自《行星地球 第三季 第四集 Planet Earth S03E04 淡水》第 259 行