128：federal reserve chairman ben bernanke sounded more hopef

128：federal reserve chairman ben bernanke sounded more hopeful as .句子结构是怎样的,怎样译呢
128:federal reserve chairman ben bernanke sounded more hopeful as he appeared tuesday before the Joint Economic Committee in Congress.这句话结构是怎样的,怎样译呢?
美联储［Federal Reserve］主席BenBernanke 周二出庭接受国会［Congress -noun］联经济委员会质询（所说的证词）听上去更加充满希望。这是一篇译文里写的，和我理解的差太远了？