The military aid always has to be within a certant disatance of the president in case of emergency.

军事助理经常需要,待在总统的一定范围内,以防出现紧急情况。

普林斯顿公开课 - 国际座谈会课程节选

There is one military aid on duty every second of every day including overnight.

所以每天每秒钟,包括整一个晚上,都有一个军事助理值班。

普林斯顿公开课 - 国际座谈会课程节选

There is a military aid, which is different, who carried what's called the 'football', which is a leather section that contains the highest classified communication equipment and nuclear codes.

有个军事助理，那是不同的，他负责拿着叫“足球”的东西，是个皮革的盒子,里面装着最高秘密等级的,通信设备,和原子弹设备。

普林斯顿公开课 - 国际座谈会课程节选

There typically is one military aid from each branch.

通常每个部门,都派一个军事人员来。

普林斯顿公开课 - 国际座谈会课程节选