Scientists are still studying how the compound prevents pathogens from infecting cells.科学家仍在研究这种化合物如何阻止病原菌侵染细胞.Unfortunately, the responsible pathogens were still unknown.不幸的是, 引起疾病的病原仍不明了.Nonexposure of susceptible plan...
A special course has been set up to train young hopefuls.为了培训那些年轻的有望获得成功的人,特意设置了一门特殊的课程.The audition was attended by a score of young hopefuls.参加试音的是20个有成功希望的年轻人。Leading conservative figures and 2012 presidential hopeful...