Achilles heel

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This was the regulatory Achilles heel that led to the present crisis.
这就是导致当今经济危机的“监管的阿基里斯之踵”。
ecocn.org
We will need to ensure that those same technological innovations that provide advantage do not become our Achilles heel.
我们要保证带给我们进步的那些科技发明不会成为阿基里斯之踵。
The alacrity with which Ronald Reagan scuttled from Lebanon after the marine barracks bombing in 1983 confirmed this belief that America’s aversion to casualties was the superpower’s Achilles heel.
罗难得•里根侥幸在1983年军营爆炸后匆匆忙忙逃离黎巴嫩声称有一种说法：厌恶战争伤亡是美国这个超级大国的阿基里斯之踵。

He says their research has identified an "Achilles' heel" of the parasite - an enzyme that is needed for the parasite's survival.
But Achilles, of course, he got him in the heel where he didn't have any armor.
但阿喀琉斯,是脚踵中箭,他也是没有穿盔甲的
耶鲁公开课 - 古希腊历史简介课程节选

NATO's smart weapons—squeamishness about taking (as well as gratuitously inflicting) casualties—is also the alliance's Achilles heel.
ECONOMIST: A survey of NATO
That was kind of the Achilles heel that Congress used to attack income shifting with trusts.
FORBES: Don't Freak Out If You Hear Your Trust Is Defective