研究人员没有研究是否做家务到了某个临界点之后就会回报递减，花在家务上的时间太多是否就会妨碍夫妻亲热。
Researchers didn't explore whether housework reached a point of diminishing returns — where time on chores expanded so much that it choked off intimacy.
通常情况下，这个曲线达到顶点时，是能源储备的百分之五十枯竭的时候，在此之后根据回报递减的规律，产量不可逆转地缓慢下降。
Typically, the peak of this curve occurs when reserves are 50 percent depleted, which is followed by an irreversible slow decline in production following the law of diminishing returns.
至于教育方面，显然它的回报也将递减。
As for educational growth, it has clearly reached diminishing returns.
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