30 percent of reptiles, birds, and fish are currently threatened with extinction.目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。All reptiles have to slough their skin to grow.所有爬行动物生长过程中都要蜕皮。Snakes and crocodiles are both reptiles.蛇和鳄鱼都是爬行动物....
Most of the other fossils come from rhynchosaurs ( parrot - beaked reptiles ).其他大部分化石来自剪嘴龙 ( 嘴像鹦鹉的爬行动物 ).All reptiles have to slough their skin to grow.所有爬行动物生长过程中都要蜕皮。All reptiles have to slough their skin to grow...所有爬...
自私源于身体或思想的幼稚和无知.The selfish comes from the childish and untutored thought and body.心胸观点或思想狭窄缺乏宽度.Marked narrowness of mind , ideas, or views.剽窃是一种盗用别人的言语或思想的行为.Plagiarism is the act of representing another people's ...