it's a different story. 情况就不一样了

325. by how easy it is to approach them.
     很轻易便能接近黑猩猩
326. Another one coming up the path.
     另一只沿路过来
327. But back in the forest,
     但在森林里
328. it's a different story.
     情况就不一样了
329. Here, the chimps seem wary of the newcomers.
     在这里 黑猩猩似乎对于外来者很谨慎
330. There's a ditch there.
     有一条水沟
331. All the crew get to see...
     摄制组看到的

来自《行星地球 第三季 第五集 Planet Earth S03E05 森林》第 328 行