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....
国土安全部the Department of Homeland Security他们起初是以冒险家身份踏上我国国土的.They first set foot on our soil as adventures.他们决心把侵略者赶出国土.They were determined to drive the aggressors out of their soil....
她祖母含混不清地说着梦话。Her grandmother mumbled in her sleep.老通宝却不耐烦了,怒声喝道: “ 说什么梦话! 刚吃了两天老蚕 呢." One more day? You're dreaming!'snapped the old man impatiently.成为国王是现实而不是梦话.Becoming a king was a reality, not a dream....