tough as old boots
非常坚韧或固执的
口语·形容人或物非常坚韧
英文释义
extremely tough or resilient
例句
Don't worry about him, he's tough as old boots and will bounce back quickly.
典故来源
源自旧时靴子用厚实皮革制成，非常耐用，比喻人或物极其坚韧。