VOA慢速英语:Study: Prehistoric Humans Were Not Very Nutritious

fossil – n. something (such as a leaf, skeleton, or footprint) that is from a plant or animal which lived in ancient times and that you can see in some rocks

cannibal – n. a person who eats the flesh of human beings

date – v. to show or find out when (something) was made or produced

Paleolithic – adj. of or relating to the time during the early Stone Age when people made rough tools and weapons out of stone

calorie – n. a unit of heat used to indicate the amount of energy that foods will produce in the human body

resourceful – adj. able to deal well with new or difficult situations and to find solutions to problems

key – adj. extremely important

interpretation – n. the act or result of explaining or interpreting something; the way something is explained or understood

reevaluate – v. to judge the value or condition of (someone or something) again