An extrinsically valuable activity is a means to an external goal; its value lies in achieving that goal.
外部价值取向的活动是达成外部目标的一个方式，其价值在于获得该目标。
I suggest it should be an activity whose value lies in the activity itself and not in achieving an external goal.
我认为要数那种价值在于其自身，而不在于达到一外在目标的活动。
An intrinsically valuable activity is an ongoing activity that does not seek to achieve an external goal: it is a never-ending process.
一个具有内部价值的活动是一个持续进行，但是不为获得一外在目标的活动。
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