boondoggle

1. N-COUNT People sometimes refer to an official organization or activity as a boondoggle when they think it wastes a lot of time and money and does not achieve much. (勞民傷財?shù)?無用物[美國英語] [非正式]

The new runway is a billion-dollar boondoggle. 這條新跑道是一個價值十億美元的廢物。