美国总统奥巴马已经上路了。他已完成对俄克拉荷马、内华达、俄亥俄和新墨西哥4个州的访问,这4个州对于美国的能源生产至关重要。此次访问的时机选择很恰当—眼下人们对油价上涨的担忧正重新燃起。他对地点的选择也很高明,因为这显示出奥巴马非常清楚,美国需要全面的 US President Barack Obama has been on the road. He has completed interviews with four states, Oklahoma, Nevada, Ohio and New Mexico, which are central to U.S. energy production. The timing of this visit is well-chosen - fears of rising oil prices are now rekindling. His choice of location is also clever as it shows that Obama is very clear that the United States needs a comprehensive