our chimps even have televisions." But such creature comforts don't change the fact that chimpanzees used in medical research may suffer or die, and that's unacceptable to famed primate expert Jane Goodall.

VOA: standard.2010.02.16

It doesn't change from the day you were born to the day you die-- or so they thought.

从出生到死亡时都不会改变-,或者说他们这样认为。

哈佛公开课 - 幸福课课程节选

It doesn't change from the day you were born to the day you die-- or so they thought.

从出生到死亡时都不会改变-,或者说他们这样认为。

哈佛公开课 - 幸福课课程节选