| 单词 |
security clearance |
| 释义 |
security clearance[siˈkjuəriti ˈkliərəns]
freq. 92 dict. 8 cmpt. 3 spoken 73 na.(对参加机密工作的人进行的)安全调查 [网络]安全检查；安全许可；安全通关证 |
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