a situation in which more money is spent on something than is needed or wise

It became apparent that there had been over-investment in certain areas of the economy. 很明显，在经济的某些领域存在过度投资的情况。

Manufacturers persistently overestimated future demand, leading to huge overinvestment.

a situation in which more time, effort, etc. is used on something or someone than is needed or wise

Emotional overinvestment is when you focus too much of your thoughts or emotions on a thing or person.

By the end, it's impossible to share in or even comprehend their crazy over-investment in one another. 到最后，不可能参与甚至理解他们对彼此的疯狂过度倾注。