那些老面孔都集中在经济和国家安全部门，时值美国处于反恐战争和经济动荡之际，奥巴马想以延揽这些人入阁来向外界发出安抚信号。

The old faces are grouped in the economics and national-security camps, an effort by Mr. Obama to send reassuring signals at a time of war and economic upheaval.