boil down 1. 煮浓，熬浓 If you boil that soup down a bit, it'll taste better. 假使你把那汤煮得浓一点，味道会更好。 Even the penguins were killed and boiled down for their oil. 甚至企鹅也被杀死了熬油。 2. 压缩；简化 boil down a report to 300 words 把报告压缩到300个词 The story boils down easily. 这个故事易于简化。