Over many years, 多年来

289. for how much longer will they survive?
     那就是这些生命究竟还能存活多久
290. Surely, the time has come to rebuild them.
     毫无疑问 重建这份联系的时候到了
291. [Behind-the-Scenes Footage]
     [幕后花絮]
292. Over many years,
     多年来
293. I've been lucky enough to watch chimps in their natural home,
     我很幸运能够观察生活于自然家园的黑猩猩
294. such as here in the thick forests of West Africa.
     比如在非洲西部这片茂密的森林中
295. Chimpanzees.
     黑猩猩

来自《行星地球 第三季 第五集 Planet Earth S03E05 森林》第 292 行