fool's gold

英 [ˌfuːlz ˈɡəʊld]

美 [ˌfuːlz ˈɡoʊld]

n. 愚人金(指黄铁矿); 虚幻的摇钱树

牛津词典

noun

愚人金（指黄铁矿）
a yellow mineral found in rock, which looks like gold but is not valuable, also called iron pyrites
虚幻的摇钱树
something that you think is valuable or will earn you a lot of money, but which has no chance of succeeding

愚人金(指黄铁矿)
Fool's goldis a substance that is found in rock and that looks very like gold.
N-UNCOUNT 虚幻的摇钱树;注定失败的计划
If you say that a plan for getting money isfool's gold, you mean that it is foolish to carry it out because you are sure that it will fail or cause problems.
1. The British establishment seems to be off on another quest for fool's gold.
  这家英国机构似乎开始了又一次徒劳无功的探索。

noun

a common mineral (iron disulfide) that has a pale yellow color
Synonym:pyriteiron pyrite

Any other promise of achievement is fool's gold.
任何其他关于成功的许诺都不过是愚人金。
To make of or decorate with brass. fool's gold Cuprous acetylide takes the form of a russet or reddish-brown powder, insoluble in water and in the majority of organic solvents.
乙炔亚铜是黄褐色的红棕色的粉末，不溶于水和大多数有机溶剂。
To distinguish real gold front fool's gold.
辨别真金和愚人金。
We can see the evidence of fool's gold weight.
我们可以看到傻瓜的黄金重量的证据。
"Fool's gold" is the popular name for a kind of stone that glitters like gold but contains no gold at all.
“愚人之金”是象金子般发光却没有任何真金的一种石头的名称。
The British establishment seems to be off on another quest for fool's gold.
这家英国机构似乎开始了又一次徒劳无功的探索。
The Study of the Ore Characters and Metallogenic Phases of the Au-Cu-Fe Deposit in Yinan of Shandong Province fool's gold
山东沂南金铜铁矿床的矿石特征及成矿期次研究
To that end, Wadia and his colleagues found that iron pyrite better known as fool's gold was several orders of magnitude better than any of the alternatives, based on both cost and abundance.
为了这一目的，瓦迪亚和他的同事们发现硫化铁&俗称傻瓜金，从储量及价格上优于其它任何替代材料几个数量级之多。