national security

• 国家安全,民族安全

national security的用法和样例：

例句

1. The group was considered to be a risk to national security.
   这伙人被认为是威胁国家安全的危险分子。
2. On Thursday the National Security Council held a long and confused session.
   星期四，国家安全委员会开了一次冗长而混乱的会议。