还不明确的是，为什么当我们变老的时候这个开关会关上。

What’s not clear is why the switch flips “off” as we get older.

youdao

很多人相信压力对我们的大脑有害尤其当我们变老的时候。

Many believe that stress is bad for our brains especially as we get older.

youdao

还不明确的是，为什么当我们变老的时候这个开关会关上。

What's not clear is why the switch flips "off" as we get older.

youdao

还不明确的是，为什么当我们变老的时候这个开关会关上。

What's not clear is why the switch flips "off" as we get older.

youdao