stone-hearted的用法和樣例：
例句
用作形容詞 (adj.)
- One would need to have a heart as hard as stone not to be moved by his pitiable plight.
他的境況十分可憐，只有鐵石心腸的人才會不為所動。 - So cruel slave-drivers forced the Israelites to make bricks and drag heavy blocks of stone to build cities and temples for the Pharaoh.
於是，殘酷的奴隸主強迫以色列人做磚，並拖著沉重的石塊建造法老的城市和廟宇。
