Vaccination and other prophylactic measures can be carried out.可以采取疫苗接种和其他预防措施。Anyone who wants to avoid the flu should consider getting a vaccination.如果不想得流感，就该考虑接种疫苗。Smallpox can be contained by vaccination.种牛痘疫苗可以控制住天...
Menses first four days shoot inside on, how big gestation probability is?月经前四天射里面, 怀孕几率多大?born after a gestation period of less than the normal time在短于正常时间的妊娠期后出生的DNA was extracted from fetuses at mid - gestation, about ...