So when Alan Greenspan was head of the Federal Reserve, his entire job was to watch out for problems in the US economy and to make sure that they didn't spin out of control.
앨런 그린스펀이 연방준비제도 의장이었을 때 그의 임무는 미국 경제  문제들을 지켜보고 통제불능 상태가 되지  않도록 하는 것이었죠.