Hint： Mantis
American officials say they are working to reduce visa delays that have affected foreign science students, researchers and others. The delays involve a security clearance process called Visas Mantis. Through this program, different government agencies try to identify visa applicants who could threat…
美國(guó)官員稱，他們正努力減少簽證延遲帶給國(guó)外理科生、研究人員和其他一些人員的影響。簽證延遲部分原因是由于要進(jìn)行一項(xiàng)稱為“螳螂簽證”忠誠(chéng)度調(diào)查項(xiàng)目。通過(guò)該項(xiàng)目，（美國(guó)）不同的政府機(jī)構(gòu)試著確定那些可能對(duì)國(guó)家安全造成威脅的簽證申請(qǐng)人。 本項(xiàng)目旨在保護(hù)美國(guó)軍事技術(shù)或那些可能被美國(guó)軍方用于應(yīng)對(duì)其他國(guó)家或恐怖主義者…