图1-23髂骨大块取骨遗留的缺损.Fig. 1 - 23 Defect in ilium after large graft was removed.显露髂骨非常简单,但可导致相当多的出血.Exposure of the ilium is simple but may cause considerable bleeding.自体髂骨移植可减少排异反应, 提高手术的成功率.Using self - ilium graft may redu...
He passed the letters to the Department of Trade and Industry.他把信交给了贸工部。I am expecting several important letters but nothing has arrived.我正在等几封重要的信件，可是一封都没到。We delved through a sackful of letters to draw the winning name...
Walruses have enormous appetites and hunt for food almost constantly.海象食欲极大,几乎一直在猎取食物.I normally eat seals but also can dine on walruses, mussels or even berries and seaweed.我通常吃海豹,但也能吃海象, 蚌类,甚至是浆果和海藻....