Take it,typical human scene here in Cambridge.
举一个典型的人类场景为例 就在剑桥这里
Three people having a pleasant day out on the River Cam..
三个人快乐地在康河上出游
which winds its way between the colleges.
康河蜿蜒在各学院之间
These people,whose body are controlled by their brains
这些人的身体被他们的大脑掌控
Can interact with each other.
他们能彼此互动
Appreciate each other and their surroundings.
欣赏对方 也能欣赏周遭环境
And might even decide to play a song...or fall in love.
他们甚至可能决定弹一首歌 或者坠入爱河
Their world is not without meaning. Quite the opposite.
他们的世界并非无意义 正好相反
Their world is full of meaning.
他们的世界充满意义
To them,even a simple glance can be laden with meaning.
即使是一个简单的凝视 对他们而言都充满了意义
So much so that it's easy to get carried away.
以至于一不小心就分神了
So finding out where the meaning is
因此查出意义何在
is a problem for science.
就属于科学要探讨的问题
And it means delving into why we have consciousness at all.
这表示要钻研人到底为何会有意识
Enter one of the greatest theories in science: evolution.
此时科学最伟大的一项理论就登场了 演化论