Each of these life - sustainng agents begins as a stem cell , a sort of hematological embryo.这三种维持生命的要素都起源于干细胞.干细胞是血液的胚胎.Hematological malignant diseases rarely uterine cervix as primary malignancies.子宫颈原发性血液恶性疾病相当罕见.Hem...
所有的渡船都免费或以极低的收费运载自行车。All the ferries carry bicycles free or for a nominal charge.各处对单程租赁的收费都很高。There are hefty charges across the board for one-way rental.收费低廉的旅行社可以提供240英镑起的低价机票。Cheap flights are available from budget t...
病人的免疫系统会对移植器官产生异质排斥反应。The patient'simmune system would reject the transplanted organ as a foreign object.但免疫疗法目前仍处于实验阶段。For the time being, however, immunotherapy is still in its experimental stages.瑜伽能增强人体免疫系统。Yoga...