Mark Covert doesn't have to think about his run today.
马克·卡维特不需要考虑今天需不需要去跑步。
The covert approach allowed the White House to hide its involvement if necessary.
如果必要的话，这个秘密措施可以隐蔽掉白宫的参与。
But there were legal objections to a covert operation.
但是法律不允许这样的秘密行动。
Some people need to be more covert and flexible scanning can use button lens.
有的人需要更隐蔽和灵活的扫描就可以运用纽扣镜头。
Third, the aim of carrying out overt work is to begin covert work.
公开工作的目的，是为着建立秘密工作。
Covert channel technique is to hide the communication process itself.
隐秘信道技术是为了隐藏通信过程本身。
The second quality you will need is the ability to be completely covert and discreet.
第二质量，您需要的是能够完全秘密和谨慎。
We should learn to fight with the enemy in an overt and covert way.
我们应学会同敌人作公开的和隐蔽的斗争。
Therefore, it is urgent to strengthen the building of covert...
加强隐性课程建设势在必行。
We should learn to fight with enemy in an overt and covert way.
我们应学会同敌人做公开和隐蔽的斗争。
We should learn to fight with enemy in an overt and covert way.
我们应学会同敌人做公开和隐蔽的斗争。
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