koala英[kəʊˈɑ:lə]美[koˈɑlə]n.树袋熊;考拉名词复数:koalas[例句]Hanger was the first person to genetically sequence the koala retrovirus after its discovery.hanger是靠前个对这种考拉逆转录病毒进行基因测序的人。