The sign on the bus read "Private: Not In Service".巴士的标牌上写着“私家车：不对外出租”。I had to sign on the dole on Monday.我只好于星期一办理了领取失业救济金的登记。It's time for you to sign on.你该播音了....
The liver is frequently involved by leukemic infiltration or by lymphoma in patients with these diseases.在有白血病浸润或淋巴瘤的病人中,肝脏常为白血病浸润或淋巴瘤所累及.Are Leukemic Patient Bone Marrow Mesenchymal Stem Cells Malignant?白血病人骨髓间充质干细胞是否是恶...