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1. national security advisor 国家安全顾问
The National Security Advisor and the security team get together and say these are our priorities.
国家安全顾问，和国家安全队伍会一起，讨论我们的优先次序。
2. stem from 源于
All my problems stem from drink
我所有的问题都源于酗酒
3. access to 获得
He has a security clearance that allows him access to classified information
他获得了安全许可，可以接触机密信息。
4.on behalf of 代表
He spoke on behalf of all the members of the faculty and staff.
他代表全体教职员工讲了话。
