President Obama is back from his first trip to Asia since becoming what he called "America's first Pacific president."

VOA: special.2009.11.21

We deliberate with an eye to preservation or change to making something better or to preserve it from becoming worse.

我们商议,以求保守或改变,让事物变好,或保守它不至于变得更坏。

耶鲁公开课 - 政治哲学导论课程节选

All actions aim at preservation or change, at making something better or preventing it from becoming worse.

所有行动都是为了维持或者改变，为了让事物变得更美好,为了不让它变得糟糕。

耶鲁公开课 - 政治哲学导论课程节选

In this way,Roosevelt and Willkie tried to keep America's growing involvement in the war from becoming a major political issue in the election.

VOA: special.2011.05.12

Those stem cells from the blood are capable of becoming all those cells in the blood.

这些血液中的干细胞,能够成为任何血细胞

耶鲁公开课 - 生物医学工程探索课程节选

In this way,he prevented Hershey,Pennsylvania from becoming a factory town in which the workers were forced to pay their employers for a place to live.

VOA: special.2010.12.05

and we'll talk about where food comes from because people have become very interested and they're becoming ever more interested in the story of their food.

我们将谈到食物的来源,因为人们对食品的追溯,越来越感兴趣

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Vitamin A helps prevent skin and other tissues from becoming dry.

VOA: special.2009.04.21

El According to Canaanite mythology, Baal defeated El, and assumed his position at a certain point as the head of the Canaanite pantheon, so there was a switch in Canaanite mythology, from El to Baal becoming supreme.

根据迦南神话，Baal打败了，在某一时期担任了职务,作为迦南万神庙的首领，因此迦南神话中有一个转折，从El至高无上的地位到Baal的无上地位。

耶鲁公开课 - 旧约导论课程节选

Britain and France tried to prevent Texas from becoming a state.

VOA: special.2009.02.19

It is not like in the past." Europe may have emerged from recession, but its effects are only now becoming clear.

VOA: standard.2010.06.24

And we remain committed to doing all we can to try to prevent Iran from becoming a nuclear weapons power.

VOA: standard.2009.06.29

Anecdotal reports from IOM monitors suggest that IDP women are particularly vulnerable to becoming involved in prostitution and trafficking as a result."

VOA: standard.2009.10.04

President Obama is struggling to find a new strategy for Afghanistan and a way to keep Iran from becoming a nuclear weapons power.

VOA: standard.2009.10.09

Nevertheless,off-field issues will prevent the tournament from becoming the international celebration that FIFA World Cups usually represent.

VOA: standard.2009.10.22

But Professor Cengiz Aktar, head of European Union studies at Istanbul's Bachesehir University, says such reports from the commission are becoming just an academic exercise.

VOA: standard.2009.10.15

"They were willing to risk their lives, in this case, to prevent Afghanistan from once again becoming a safe haven for al-Qaida and its extremist allies.

VOA: standard.2009.10.26

Besides expanding the Federal Reserve's powers to police banks and speculative markets, the measure also contains provisions to prevent financial institutions from becoming too big to fail.

VOA: standard.2010.05.21

Doctors say this early detection has prevented Rajamanickam from becoming blind.

VOA: standard.2010.05.25

The lanky teenager began playing Australian Rules Football just four years ago but has made history by becoming the first player from Africa to join the professional league,the AFL.

VOA: standard.2009.12.17

And that typically is enough to prevent people from becoming hypoglycemic.

VOA: standard.2010.04.15

Our interests in Afghanistan are quite limited. The president emphasized that the core interest is to prevent Afghanistan from once again becoming a platform for the launching of terrorist attacks.

VOA: standard.2009.03.27

He said the main goal must be to prevent the country from again becoming a base for terrorist attacks on the United States as it was in 2001,which he said requires preventing the Taliban from returning to power.

VOA: standard.2009.09.22