The issue has helped Obama pull ahead of his rival in the polls.

经济问题帮助奥巴马在民调中超越他的对手。

youdao

But his flight gave Americans the feeling that the United States could pull ahead of the Soviet Union in the space race.

VOA: special.2009.07.08

MTV's brand, its models-with-attitude presenters and its relentless marketing, has enabled it to pull ahead of its rival.

ECONOMIST: Star woes

Get it wrong, and your savvier rivals will swiftly pull ahead of you.

FORBES: The Key to Customer Loyalty: The Total Shopping Experience

But Mr Hague needs to achieve more than this if he is to show that he has begun to pull ahead of Labour.

ECONOMIST: The local elections (1)