vested interest

1. N-VAR If you have a vested interest in something, you have a very strong reason for acting in a particular way, for example,to protect your money, power, or reputation. 既得利益

The administration has no vested interest in proving public schools good or bad. 該行政部門在証明公立學(xué)校的好壞方麪沒有什麼既得利益。