古生物学研究表明，现生鸟类的最早出现是在古新世，而爆发性辐射演化发生在新生代早期。
Paleontological studies show that modern avian groups probably first appeared in the Paleocene and experienced an explosive radiation in the early Cenozoic.
除了白血病和淋巴腺癌，大脑瘤是在孩子里发生的新生物的最普通的类型。
Other than leukemia and lymphoma, brain tumors are the most common type of neoplasms that occur in children.
cns淋巴瘤的临床表现没有特异性，它依赖于肿瘤(新生物)发生的位置。
The clinical presentation of CNS lymphoma is nonspecific and depends on the location of the neoplasm.
因为正常组织通常表现对TRAIL的抵抗，而在肿瘤发生过程中，新生物通常获得对TRAIL的敏感性。
Since normal tissues usually show resistance to TRAIL, TRAIL-sensitivity in neoplasm would be basically acquired during tumorigenesis.
因为正常组织通常表现对TRAIL的抵抗，而在肿瘤发生过程中，新生物通常获得对TRAIL的敏感性。
Since normal tissues usually show resistance to TRAIL, TRAIL-sensitivity in neoplasm would be basically acquired during tumorigenesis.
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