Most adults are immune to Rubella.大多数成人对风疹具有免疫力。Objective To study the immunity duration of attenuated live rubella vaccine.目的了解冻干风疹减毒活疫苗的免疫持久性.Rubella and the liver.风疹和肝脏....
保守派不满布鲁尔推行的这些变革。The old guard did not like the changes that Brewer introduced.大多数制造商不得不推行短工时工作制。Most manufacturers have had to introduce short-time working.这种先进的操作方法已在各厂推行.This advanced method has been introduced in ever...