Natural disasters have obvi-ously contributed to the continent's economic crisis.很显然，自然灾害也是造成该大陆经济危机的原因之一。The accident has echoes of past disasters.那起事故仿佛是过去灾难的重现。disasters such as floods and famine水灾和饥荒这一类灾难...
Bone marrow is also the repository for some leukemias and lymphomas ( Seth Rolbein )骨髓还是某些白血病和淋巴瘤的藏身处 ( 塞特罗班 )The result -- the mice developed leukemia and lymphomas.结果是 —— 实验鼠患了白血病和淋巴瘤.Does surgery belong to medical his...