Achilles's Heel

基本解释

Smith is always careless, it is his Achilles's heel .
史密斯总是太粗心了，这是他性格上致命的弱点。。
You can say either "Achilles' heel" or "Achilles'(s) heel. " Both are correct.
你既可以说“Achilles' heel”，也可以说“Achilles'（s） heel”，这两种说法都是正确的。
Let's talk about the values - I think this is China's Achilles's heel in becoming global.
就中国的价值观而言，我认为这正是中国全球化进程中的软肋。
gonewell.blog.163.com

He says their research has identified an "Achilles' heel" of the parasite - an enzyme that is needed for the parasite's survival.

Ms. ANDERSON: Republicans will give the appearance of contesting for African-American vote because they've remained the Republican Party's Achilles' heel.
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The party's Achilles' heel--its lack of any independent check on its power--undermines at every turn its efforts to police corruption, vet its members, reform its bureaucracy and respond to crises.
FORBES: Beijing Dispatch
Online, America's aching Achilles' heel is the wide-open automated control systems that run the nation's networks for electricity, water, gas, oil and more.
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