VOA慢速英语:Will Eating Less Help You Live Longer?(翻译)

calorie – n. an amount of food having an energy-producing value of one large calorie

biochemical – adj. represented by, produced by, or involving chemical reactions in living organisms

mechanism – n. a process or system that is used to produce a result

impractical – adj. not easy to do or use

regular – adj. happening or done very often

basis – n. a fixed method or system for doing something

functioning – v. to work or operate

maintenance – n. the act of keeping property or equipment in good condition by making repairs or correcting problems