芮效俭

它们的垄断地位让它们获得巨大财力，它们用这些资源来推进自己的议程，芮效俭补充说。

Their monopoly position has allowed them to acquire vast monetary assets that they can use to back their own agenda , he adds .

芮效俭是美国前驻华大使，他说这次的美国腹地之行是尝试扩大中美两国智库交流的全新一步。

J. Stapleton Roy , a former US Ambassador to China , said the tour of the American heartland is a new step in trying to expand exchanges among Chinese and US think tanks .