VOA慢速英语:研究确认来自动物的不寻常化石

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

carbon – n. a chemical element that is found in all living animals and plants.

flexible - adj. can easily bend

analysis - n. a careful study of something to learn about its parts, what they do, and how they are related to each other

bearing - n. a relation or connection