荨麻在任何肥沃的荒地上都能茂盛地生长。Nettle grows plentifully on any rich waste ground.一旦腐殖土形成, 植物就可以在里面茂盛地生长了.When the humus has been formed, plants can grow well in it....
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...