这些地区被军队封锁包围了。The areas are sealed off and ringed by troops.那里的士兵将封锁机场。Soldiers there are going to seal the airport off.直升飞机的探照灯来回扫射这个被封锁的公园。Helicopters with searchlights swept the park which was sealed off....
Objective : To evaluate the cost - effectiveness analysis of treating lower respiratory infection with cefatrizine, cefotaxime and cefuroxime.目的: 评价头孢类抗生素中常用的头孢曲松钠 、 头孢噻肟钠和头孢呋辛钠治疗下呼吸道感染的成本 — 效果分析....
After the 1960 s, China began to inoculate BCG, pertussis, diphtheria, tetanus, measles and poliomyelitis vaccines.六十年代后, 中国开始在大、中城市接种卡介苗 、 百日咳 、 白喉 、 破伤风 、 麻疹、脊髓灰质炎的疫苗的工作.Recombinant BCG vaccine is a new type of vaccine...