Lutein is dihydroxy - carotenoids with the ionone ring systems distributed widely in nature.叶黄素是含紫罗酮环的二 羟基 类胡萝卜素,在自然界广泛存在.Lutein and zeaxanthin are both dihydroxy - carotenoids with the ionone ring systems distributed wi...
该音乐营造出了一幅大草原上宽广辽阔的景象。The music invoked the wide open spaces of the prairies.西伯利亚大草原的艰苦环境使她变得坚强起来。She was hardened by the rigours of the Siberian steppes.远处是连绵一片的草原.There is a reach of grassland in the distance....
...students who play intercollegiate athletics.参加大学校际体育竞赛的学生Robb is torn between becoming a doctor and a career in athletics.罗布在做医生还是当运动员之间痛苦抉择，左右为难。My school did nothing whatsoever in the way of athletics...我的学校在体育方面无所作...
5%后天性sop者有明显自觉复视.The 82.5 % of patients with acquired SOP were accompanied with diplopia.目的:探讨白内障术后复视及上睑下垂的机制.To determine the factors causing diplopia and ptosis after cataract extraction.在接受次甲状腺全切除手术之后, 复视的情形仍然存在.After...