单词d-v-
网络: 距离矢量算法；距离矢量；路由算法
While her blood tests were normal, an ultrasound showed deep-vein thrombosis, a dangerous blood clot.
虽然她的血液测试很正常，但超音波显示她有一种危险的血液凝块——深静脉血栓（deep-veinthrombosis，简称D.V.T.）。
As early as the mid-14th century a. d. , v chang, displayed online manageable size ancient thread-bound books.
早在公元14世纪明朝中叶，就已出现使用线装订的古线装书了。