4 Example Sentences Showcasing the Meaning of 'Hard As Nails'
The chef was hard as nails, demanding perfection from the kitchen staff to create exquisite dishes.
The veteran boxer's jaw was as hard as nails, having endured countless blows throughout his career.
The scientist marveled at the metal alloy, hard as nails, that could withstand extreme temperatures.
The software's security system was hard as nails, impervious to hacking attempts.
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