目的探讨多区段肝切除术治疗肝内胆管结石的效果。
Objective to evaluate the effect of the segments hepatectomy for hepatolithiasis.
比赛的大部分路线是陡峭、蜿蜒，而且颠簸不平的。有些区段很陡，坡度竟达50多度。
Most ofthe course is steep, winding and bumpy. And some staged are so steep that the slopes are even more than 50 degrees.
长江口是巨型多沙河口，其特有的水沙运动特点，形成了长达数十公里的拦门沙区段。
The Yangtze River estuary is a large heavily sediment-laden estuary where the bar shoal with dozens of kilometers in length is formed due to its unique feature of water-sediment movement.
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