如果狼群不受美国联邦制定的《濒临灭绝物种法》的保护，狼会消失吗？
Will wolves disappear again from the lower 48 states if they are not federally protected by the Endangered Species Act?
如果狼群不受美国联邦制定的《濒临灭绝物种法》的保护，狼会消失吗？
Will wolves disappear again from the lower 48 states if they are not federally protected by the Endangered Species Act?
应用推荐