Testing VD pathogen through PCR may efficaciously prevent, cure and control VD.利用PCR技术检测性病病原体,可有效的预防, 治疗和控制性病.Results In those pathogen there 52 % is Gram - positive bacteria, there 48 % is Gram - negative bacteria.结果致病菌...
细胞的这种向里推进标志着原肠胚形成的开始.This pushing - in of cells marks the start of gastrulation.初生合点吸器沿着胚珠的维管组织分支.The primary chalazal haustorium ramifies around the vascular tissues of the ovule.坚果的胚乳由于存在丹宁,所以有显著的涩味.The endosperm of th...
一代又一代学生学会了机械地重复这些标准解释。Generations of students have learnt to parrot the standard explanations.许多文人只是机械地模仿一套听上去令人印象深刻的说法。Many literary academics simply parrot a set of impressive-sounding phrases.我好几个小时都在机械地往墙上打网球。I spent...