But U.S. officials, among others, have questioned why Iran, a major oil and gas producer, is investing huge sums for nuclear power plants and a uranium-enrichment capability.
But U.S. officials, among others, have questioned why Iran, a major oil and gas producer, is investing huge sums for nuclear power plants and a uranium-enrichment capability.
但是，美国官员质疑，为什么像伊朗这个主要的石油和天然气生产国需要投资大量的资金建设核电厂和浓缩铀的设施。