cold-hearted
adj. 冷淡的,無情的
A cold-hearted person does not feel any affection or sympathy towards other people.
...a cold-hearted killer.
鐵石心腸的殺手
John: I can't believe these businessmen are cold hearted enough to sell these kinds of products.
約翰: 我真不敢相信這些商人會黑心到賣這樣子的商品.