胆石通常是在胆囊中形成的.Gallstones usually form in the gall bladder.胆石症是由胆汁的成分形成的.Gallstones are formed from the constituents of bile.胆石症的发病率随年龄而逐渐增高.The incidence of gallstones increases progressively with age....
The usher marshalled people into the public and press galleries.迎宾员引领人们进入公众和媒体画廊....the way in which Britain marshalled its economic and political resources to protect its security interests.英国为保护其安全利益所采取的集中经济与政治资源的方法And...