这种病极易传染.It's a highly contagious infection.新城疫 ( NewcastleDisease,ND ) 是由新城疫病毒(NewcastleDiseaseVirus,NDV) 引起的极易传染的毁灭性疾病.Newcastle disease ( ND ) is regarded worldwide as one of the most devastating diseases of poult...
制造商正在研制价格更便宜的新一代数字收音机。Manufacturers are working on a new generation of cheaper digital radios.有3种新产品是以传统的草药为基础研制的。Three of the new products are based on traditional herbal medicines.盼望有一天有人会研制出一种能有效预防疟疾的疫苗。Roll on the da...