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....a program to inoculate every child in the sta...
A corps of doctors arrived to inoculate the recruits.一队医生来给新兵打防疫针.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...
直接邮寄广告业在特卖品的包装方面已经变得非常熟练了。The direct marketing industry has become adept at packaging special offers.布莱克很熟练地跳上了船，他的重量使小船微微向下沉了沉。Blake jumped in expertly; the boat dipped slightly under his weight.他太缺乏经验，太不熟练，难以成功。He was ...