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...
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...