extinct/extinction

extinct /iksˈtiŋkt/ adj. 1. 灭绝的，绝种的：an extinct animal 已灭绝的动物［考句］ If nothing is done to protect the environment, millions of species that are alive today will have become    extinct.如果不采取措施保护环境，那么现在尚存的数亿百计的物种将会灭绝。［考句］Certain species disappeared or became extinct as new forms arose that were better adapted to the Earth’s changing environment.由于新的更能适应地球环境变化的生命产生，一些物种消失或灭绝了。2.(火等)熄灭了的：an extinct volcano 死火山

extinction n.消失，灭绝：［考句］Sadly, the Giant Panda is one of the many species now in danger of extinction.令人难过的是，大熊猫是众多濒临灭绝的物种之一。