Washington and others are concerned Iran is trying to develop nuclear weapons, while Tehran says its nuclear program is for peaceful purposes.

VOA: standard.2009.11.15

One of the things you kind of speculate about, and wonder about, why did some cities send out lots of colonies, some cities send out only a few, and others none at all for quite a while.

也许你感到疑惑的一件事是,为什么有些母邦派出了大量移民,另一些只有一些移民,还有其他母邦在很长时间根本没向外移民呢

耶鲁公开课 - 古希腊历史简介课程节选

It was told one man participated in a terrorist-run paramilitary camp in Pakistan, while three others received similar training in remote parts of Australia in preparation for an attack.

VOA: standard.2009.10.17

Therefore,steps were taken virtually to abolish it,'". While systemic failure was the key factor for some observers, others highlight the role played by individuals working to defeat Soviet communism from within.

VOA: standard.2009.11.03

Some Democrats who voted against the original House bill last December said they will support the president this time, while others who voted for it last year said they may vote "no" on Sunday.

VOA: standard.2010.03.19

While snow has brought smiles to the faces of children who have dusted off their sleds for the new season,for others, this cold snap just days before the Christmas break, has brought frustration.

VOA: standard.2009.12.21