举例来说，一个观察者看到有人因为献血而得到报酬，他会发现很难区分捐献者是因为内在的好品质献血还是因为贪婪。
An observer who sees someone getting paid for donating blood, for example, would find it hard to differentiate between the donor's intrinsic "goodness" and his greed.
举例来说，一个观察者看到有人因为献血而得到报酬，他会发现很难区分捐献者是因为内在的好品质献血还是因为贪婪。
An observer who sees someone getting paid for donating blood, for example, would find it hard to differentiate between the donor's intrinsic "goodness" and his greed.
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