Colleagues at work enjoy having a letterhead with their name at the top.在职的同事可把其名字印在信头之上。When he gave her the letter, she immediately recognized the letterhead.当他把信给她时, 她马上认出了信笺的信头.Please provide evidence on original let...
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 ...