A stagnant economy combined with a surge in the number of teenagers is likely to have contributed to rising crime levels in the U.S.经济发展停滞不前，加之青少年人数激增，可能是美国犯罪率上升的部分原因。The party lost all public support after a series of U-turns and policy failures.该党一连多次出尔反尔，加之一系列的政策失误，终于失尽了民众的支持。The team's win, coupled with a loss by their rivals, put them in first place.球队获胜，加之其他对手失利，使他们排在第一位。