One pandemic of Spanish flu took nearly 22 million lives worldwide.西班牙流感的大爆发夺去了全球近2,200万人的生命。They feared a new cholera pandemic.他们担心新一轮的霍乱大流行。In some parts of the world malaria is still pandemic.在世界上一些地区疟疾仍然具有高传染性。...
其它矿物: 毒砂 、 自然铋、辉铋矿 、 黝铜矿 、 汞等.Other minerals: Arsenopyrite, Native Bi , bismuthinite, tetrahedrite, Hg, etc.银形成于硫化物成矿后期的硫锑铅矿─方铅矿─ 黄铜矿 ─银黝铜矿阶段.The mineralization of silver at the late stage of formation of sulfides, i. e....
Objective : To explore the treatment of pure red cell aplasia ( PRCA ) after ABO - incompatible alloge - neic peripheral blood stem cell transplantation.目的: 探讨ABO血型不合异基因外周血干细胞移植后纯红细胞再生障碍性贫血 ( PRCA ) 的治疗.Objective : To in...
He kept bouncing up and down like a yo-yo .他像个悠悠球似的蹦蹦跳跳。Don't talk to him, he is a real yo - yo.不要跟他说话, 他真是个摇摆不定的呆瓜.My emotions went up and down scale a yo - yo.当时我的情绪就好象悠悠轮一样忽上忽下....