Mr.Obama also wants to curb tax advantages for foreign investing, close tax loopholes on offshore business dealings, and boost overall federal tax enforcement.

VOA: standard.2009.05.04

You could probably find some antigens that don't follow exactly this behavior, but in general, this is the kind of behavior you would see on first exposure to an antigen or vaccine, called the primary exposure, and on subsequent exposure to an antigen or vaccine called the boost.

可能你也会发现,一些抗原并不完全遵循这种模式,但通常来说,在你首次接触一种抗原或疫苗时,都能观察到这种模式,它被称为初次免疫,而接下来的,再次接触抗原或是疫苗被称为增强免疫

耶鲁公开课 - 生物医学工程探索课程节选

But he said he is not giving up on fixing health care, and that he did not tackle the issue to boost his political standing.

VOA: standard.2010.01.22

The New York Democrat said the embargo gives Cuba's rulers a scapegoat for their mistakes and lifting it will boost the U.S.standing on the world stage.

VOA: standard.2009.05.06

On broader themes, Mr.Obama announced a U.S.initiative to boost lending and spur economic growth and recovery in the Americas, and proposed a hemispheric partnership to tackle energy and climate challenges.

VOA: standard.2009.04.17

President Obama got the most applause from opposition Republicans when he said the number-one focus in the coming year would be on creating jobs and giving a boost to small businesses.

VOA: standard.2010.01.28

While President Nimeiri had initially cracked down on Islamic activists, by 1983 he had embraced Islamism in an attempt to boost his popularity, which had suffered along with the country's economy.

VOA: standard.2009.05.31

The European Commission's annual progress report on Turkish membership said Ankara has made some improvements on handling of human rights but said Turkey needs to speed up reforms to boost its chances of joining the bloc.

VOA: standard.2009.10.15