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.Serum alpha - fetoprotein ( AFP ) and beta - human chorionic gonadotropin ( � � - HCG ) levels we...
The once-powerful post unions have been cut down to size.一度很强势的邮政联盟已经威风不再。Ferries are very powerful and manoeuvrable compared to cargo ships.与货船相比，渡船马力大而且易操纵。In some works, flowers take on a powerful emblematic quality.在...