英语翻译

英语翻译
Reptiles are the animals that live the longest.The turtle`s long life is legendary.But no one has ever been able to calculate the exact age of the turtle,and for good reason,turtles live a lot longer than humans do.According to certain ancient documents and by across checking it would seem that the oldest turtles found have been over a century and a half old.But it is quite possible they can live even longer than that.
Crocodiles also have long lives,but their exact age is hard to calculate,too.Scientists make estimations based on the animal`s size because reptiles grow all their lives.In other words,the bigger it is,the older it is.Therefore,certain reptiles are probably a century old but the average lige-span is between sixty and seventy years.