extrinsic rewards

• 外在的酬赏

extrinsic rewards的用法和样例：

例句

1. It's a behavioral approach in which many different forms of prosocial behavior are rewarded with tokens which can be later exchanged for material rewards or privileges.
   是种行为取向，用代币来奖励准社会行为，此代币可用来兑换实质的酬赏或特权。