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1·On the other hand when we do something because we receive some reward, like a certificate or money, this is extrinsic motivation.

另一方面当我们为了得到奖励而去做某事的时候，比如证书或者金钱，就是外在的动机。

2·Extrinsic - Completing a task to receive a reward or avoid punishment.

外在动力-完成一项任务，获得奖励或免于受罚。