今天我们要学的词是signal。 Signal, 作为动词，意思是显示。 "The number of Americans filing for unemployment benefits for the first time fell to the lowest level in nearly six months, signaling a slight improvement in the job market," 首次申请失业救济的美国人降到六个月来的最低水平，显示就业市场有些许好转。可是， "New economic indicators signal weak growth in the U.S. domestic market," 新的经济数据显示美国国内市场增长疲软。 "Federal Reserve Chairman Ben Bernanke signaled that he might take more unconventional measures if the U.S. economy continues to deteriorate," 美联储主席伯南克表示，如果美国经济进一步恶化，他可能采取非常规手段。好的，今天我们学习的词是signal...