We assert that the Braun - Blanquet approach does not fall short.我们坚信其它分类途径比之 Braun -Blanquet途径,仍然是有所不足.In the Braun - Blaoquet school the description of synusial associations was not confined to cryptogam communities.在 ...
I have patients who are HIV-positive and asymptomatic.我的一些病人艾滋病病毒检测呈阳性，但却无任何体征。His estimate of half a million HIV positive cases was based on an extrapolation of the known incidence of the virus.他估计有50万个HIV阳性病例，这是根据已知的病毒...
Several factors have been adduced to explain the fall in the birth rate.有几个因素已被援引来说明出生率降低的原因。The UK has the highest birth rate among 15 to 19-year-olds in Western Europe.在西欧，英国女性在15到19岁之间生育率最高。Women's total birth - ...