The destructive and malignant neoplasms of chorionic epithelium often arise from hydatidiform moles.破坏性和恶性的绒毛膜上皮癌往往是葡萄胎所引起.Purpose To explore the CDFI diagnostic value for the hydatidiform mole.目的探讨彩色多普勒血流显像(CDFI)对侵蚀性葡萄胎...
我正在等几封重要的信件,可是一封都没到。I am expecting several important letters but nothing has arrived.我们把手探进一袋信件中抽取获奖者。We delved through a sackful of letters to draw the winning name.他们主张采取向四处随意邮寄大量信件的方式。They advocated a scattergun appro...