Definition
Describing someone who is unfeeling, resolute, and does not easily show emotions like sympathy, fear, or worry.
鐵石心腸
Despite facing many difficulties, she remained as hard as nails.
儘管面臨許多困難，她依然堅如磐石。
The manager is known for his hard-as-nails negotiating style.
這位經理以他堅如磐石的談判風格而聞名。
Growing up in a tough environment made him as tough as nails.
在艱難的環境中長大，讓他變得堅如磐石。