有些人认为做志愿者就是单纯地浪费时间，因为做志愿者是只有付出没有回报的。
Some people hold that volunteering is merely a waste of time, because the volunteers have no gains with pains.
同样给予者应该不会捐出钱，因为他的付出没有回报。 然而，实际情况不是这样。
The giver, too, ought to refrain from donating, since his sacrifice is bound to remain unrequited.
迟早广告主会明白他们的付出没有得到太多回报。
Sooner or later the advertisers will recognize that they're not getting much bang for the buck.
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