A viral infection may be localized disseminated or inapparent.病毒感染可以是局限性的,扩散性的,或不显性的.In 1854 , a localized epidemic of Asiatic cholera broke out in London.一种地方性传染病――亚细亚霍乱于1854年在伦敦爆发.The consolidated areas were usually pl...
This vast archive has been indexed and made accessible to researchers.这个存量巨大的档案室的所有文件都已编了索引，可供研究人员使用。Ostriches are descendants of dinosaurs, and the researchers liken ostrich movements to those of bipedal dinosaurs.鸵鸟是恐龙...
Some see themselves as the provider of ideas, while others view their role as essen-tially managerial.有些人自认为是出谋划策的人，其他人则认为他们主要是起管理方面的作用。The specified security provider could not be validated. Access was denied.无法验证指定的安全性...
英国于1971年开始使用十进制的1便士和2便士硬币。In 1971, the 1p and 2p decimal coins were introduced in Britain.布赖恩把手插进口袋里，把几枚硬币拨弄得叮当作响。Brian put his hands in his pockets and jingled some change.我向付费电话的投币孔里投了一枚25分硬币。I dropped a quarter into t...