动物学英译汉,那位好心人给帮忙翻译翻译

动物学英译汉,那位好心人给帮忙翻译翻译
1.Notochord, nerve cord, postanal tail, and pharyngeal slits present at least in embryonic stages; vertebrae surround nerve cord and serve as primary axial support; skeleton modified anteriorly into a skull(头骨) for protection of the brain.
2.The auditory system of amphibians is clearly an evolutionary adaptation to life on land. The ears of anurans consist of a tympanic membrane, a middle ear, and an inner ear.
3.Pisces are members of the chordate subphylum Vertebrata; thus, they have vertebrae that surround their spinal cord and provide the primary axial support. They also have a skull that protects the brain.
4.Amphibians were the first animals to colonize land, and probably evolved from lobe-finned fish, which have stout bones and fins homologous to the legs of amphibians. Another theory suggests that they evolved from lungfish.