a 3-pounder/24-pounder/185-pounder etca) an animal, fish, or person that weighs 3 pounds, 24 pounds etc 重3磅/24磅/185磅等的动物[鱼，人等]
b) a gun that fires a shell that weighs 3 pounds, 24 pounds etc 炮弹重为3磅/24磅/185磅等的大炮
→ a 3-pounder/24-pounder/185-pounder etc at pounder(1)