复数： veins
易混淆的单词： VeinVEIN

New research reveals vein thrombosis can plague travelers who have recently undergone surgery .

新的研究表明，可使最近接受手术的旅客遭受静脉血栓症的折磨。

Central retinal vein occlusion can be divided into two main subtypes : nonischemic and ischemic .

视网膜中央静脉阻塞可分为两种主要的亚型：非缺血型和缺血型。

They find a vein and stick a needle in it , and then move to the next person .

他们找到一根静脉，把一支针扎进去，然后往下给另外一个人做同样的事。

It is estimated there are over 60000 cases of potentially fatal blood clots in the uk each year caused by deep vein thrombosis .

据估计，英国每年潜在的患有致命血栓的人群中，60000多人是由深静脉血栓引起的。

Patients with nonischemic central retinal vein occlusion may be asymptomatic or present with gradual vision loss that is more pronounced in the morning .

非缺血型视网膜中央静脉阻塞的患者可能症状不明显或表现为逐渐发生的视力丧失，其症状在上午更明显。