单词：perrens
(perren 的复数)
单词：perrens 相关文章
people appear to born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical maturity guiding their growth. Not lo
新东方背诵文选
Science and technology 科学技术 Creutzfeldt-Jakob disease 克雅氏病 Breaking down the barrier 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-c
经济学人科技系列
Science and Technology Creutzfeldt-Jakob disease Breaking down the barrier 科技 克雅氏病 攻破屏障 A glimmer of hope for a drug that treats disease caused by prions 药物治疗朊病毒感染疾病的一线希望 THE epidemic of mad-cow dis
经济学人科技系列
By Noel King Debbis, Darfur, Sudan 08 June 2006 The task of urging holdout rebels to sign the Darfur Peace Agreement has fallen to the African Union, which brokered the deal in Abuja, Nigeria. It is a difficult job, and across the region, AU peaceke
2006年VOA标准英语（六月）