security clearance

n.

（对参加秘密工作人员等进行的）忠诚调查；安全调查；参与机密的资格；安全级别（此级别涉及某人可以获得哪些保密信息，哪些不可以，可以进入哪些安全保密设施，哪些不可以。）

Security Clearance
Security Clearance
Security Clearance
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