U.S. officials envisage increasingly severe sanctions against Tehran beginning with curbs on technology imports, if it continues to defy the U.N. resolution.是什么意思_U.S. officials envisage increasingly severe sanctions against Tehran beginning with curbs on technology imports, if it continues to defy the U.N. resolution.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句