VOA慢速英语:霸王龙是由一种儿童般大小的恐龙进化而来的

paleontologist – n. a scientist who studies the remains of animals and plants that lived very long ago especially in the time of dinosaurs

predator(s) – n. an animal that lives by killing and eating other animals

author – n. a person who has written something

journal – n. a magazine that reports on things of special interest to a particular group of people

coyote – n. a small wild animal that is related to dogs and wolves and that lives in North America

evolve(d) – v. to change or develop slowly often into a better, more complex, or more advanced state

paleobiologist – n. a scientist who studies the biology of animals and plants that lived very long ago especially in the time of dinosaurs