but a part of me is always very worried. 但我总是会有些担心

255. Don't let water get in the blowhole
     别让水进到呼吸孔里
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

来自《行星地球 第三季 第四集 Planet Earth S03E04 淡水》第 258 行