belt and braces
谨慎防范措施
口语·形容过度谨慎或双重保障
英文释义
Taking extra precautions or being overly cautious
例句
He wore both a belt and suspenders, truly a belt and braces approach.
典故来源
源自英国服饰习惯，同时使用腰带和背带固定裤子，比喻双重保险的谨慎做法。