你將接受定期的血液檢查以確定你是否已被感染。You'll be given regular blood tests to show whether you have been infected.許多商業(yè)性的試驗(yàn)室已應(yīng)用定期的硝態(tài)氮分析作為指導(dǎo).Some commercial laboratories use periodic nitrate tests as guides.這個(gè)收藏通過(guò)定期的書籍捐贈(zèng)而得到擴(kuò)充.The coll...