A Pentagon release says Gates and Xu also agreed to other high level visits, and to exchanges among lower-ranking service members.

VOA: standard.2009.10.27

The Office of the White House Chief of Staff is the highest office, and the Chief of Staff is the highest ranking member of the executive office of the president of the United States.

白宫办公厅是,最高级别的政府机关，而办公厅主任是,美国总统行政办公室,级别最高的官员。

普林斯顿公开课 - 国际座谈会课程节选

Joseph Nye is an influential foreign policy expert and former high-ranking Clinton administration official.

VOA: standard.2009.11.03

Ileana Ros Lehtinen is the ranking committee Republican "It should be clear that unless we impose the maximum pressure on Iran, and this bill is a major step forward in that direction, the regime will continue its march toward acquiring nuclear weapons, dominating the Persian Gulf, and expanding its network of radical militants around the world,".

VOA: standard.2009.10.28