美国总统正在对莫斯科进行回访。
The US president is making a return visit to Moscow.
副总统受到谴责，说他在几个重大问题上出尔反尔。
The vice-president was accused of flip-flopping on several major issues.
他是总统的.亚洲政治智囊。
He's the president's go-to guy on Asian politics.
他赢得了民主党总统候选人的提名。
He won the nomination as Democratic candidate for the presidency.