for good measure
额外的、作为保险措施的
口语·表示额外添加
英文释义
as an additional extra; to go beyond what is needed or expected
例句
She added a pinch of cinnamon for good measure to the recipe.
典故来源
源自16世纪商业交易中，卖家在称重后额外加一点货物以确保足量。