Achilles' heel /əˈkɪliz-/ noun plural Achilles' heels
plural Achilles' heels
Learner's definition of ACHILLES' HEEL
[count]
: a fault or weakness that causes or could cause someone or something to fail致命弱点；致命缺陷 -
I'm trying to lose weight, but ice cream is my Achilles' heel.我在拼命减肥，可爱吃冰激凌是我的致命弱点。
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This year, the team's Achilles' heel is its pitching. [=the team could fail because of its poor pitching]今年这支球队的软肋是投球。