Chink in one's armor
某人防御或优势中的弱点，容易被攻击或利用。
用于指出某人或某系统的缺陷或脆弱之处。
英文释义
An area of vulnerability.
例句
His temper is the chink in his armor.
典故来源
源自中世纪骑士盔甲，'chink'指盔甲缝隙，是薄弱点，易被武器刺入。