Economists watch retail sales closely because consumer demand drives about 70 percent of U. S. economic activity.
经济学家密切关心出售数据是因为美国大约70 % 的经济活动受消费者需求的推动。
2
Worries about job security have been hurting the U. S. economy by making consumers less likely to do the spending that drives most U. S. economic activity.
对就业保障的担忧给美国经济构成负面影响，因为消费者不愿消费，而消费是美国经济活动的主要推动力。
3
Economists watch retail sales because consumer demand drives most U. S. economic activity.