"diminishing returns" in Chinese (Simplified)
Definition
指在投入越来越多的努力、时间或资源后，获得的改进或收益却越来越少。
Usage Notes (Chinese (Simplified))
“Diminishing returns” 多用于经济、生产力语境。它强调只有在最佳点之前投入才有效，超过后投入增加，收益反而减少。常见说法包括“law of diminishing returns”。不能用来指收益变为负，而是收益增量减少。
Examples
If you keep adding workers to a small factory, you reach diminishing returns.
如果你不断往小工厂里增加工人，会出现**边际效益递减**。
Studying for ten hours may lead to diminishing returns for most students.
对大多数学生来说，学习十小时可能会导致**边际效益递减**。
There are diminishing returns when you water the plants too much.
给植物浇水太多也会出现**边际效益递减**。
At some point, putting in extra hours at work just gives you diminishing returns.
到了一定程度，加班只能带来**边际效益递减**。
I realized I was hitting diminishing returns with my workout after two hours at the gym.
我发现健身房锻炼两个小时后，已经有了**边际效益递减**。
You can keep polishing your essay, but after a while, you'll just see diminishing returns.
你可以一直修改你的论文，但过一阵子你只会看到**边际效益递减**。