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.

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四是一些刺激政策的效应会递减，一些着眼长远的政策收到成效需要时间。

Fourthly, the effect of some of the stimulus measures will wane, and it will take time for those long term policies to show effect.

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一些刺激政策的效应会递减，一些着眼长远的政策收到成效需要时间。

Some of the stimulus measures will see their effect wane, and it will take time before those long-term policies show effect.

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