- He's been studying the chimps every day for the last 15 years...
15年来 汤姆每天都在研究黑猩猩 - ..and has seen the change first-hand.
目睹了这里的变化 - Very many things have changed.
很多事情都变了 - When chimpanzees were seeing people, they would run.
过去黑猩猩看到人类时 会赶紧跑开 - Run very quickly and go.
跑得特别快 - But now they just stand.
但现在已经无动于衷了 - Because everywhere they go,
因为它们不管到哪里