fool’s gold
noun/ˌfuːlz ˈɡəʊld/
/ˌfuːlz ˈɡəʊld/
[uncountable]- a yellow mineral found in rock, which looks like gold but is not valuable, also called iron pyrites
岩石中发现的黄色矿物，看起来像金，但不值钱，也称为黄铁矿 - something that you think is valuable or will earn you a lot of money, but which has no chance of succeeding
虚幻的摇钱树