Wayne Bronner says demand for small objects to hang on Christmas trees has expanded over the years.

VOA: special.2009.12.25

John Rawls expanded on this and " he called it the "Original position".

约翰·罗尔斯对此做了进一步阐述,并称之为“原始状态。

耶鲁公开课 - 金融市场课程节选

For example, the court will have to rule on whether companies with majority foreign ownership can enjoy the same expanded rights of political speech.

VOA: special.2010.03.12

The event was also expanded, as we learned on the United States Census Bureau Web site.

VOA: special.2010.04.30

Among the new measures are an expanded arms embargo and a ban on certain ballistic missile activities.

VOA: standard.2010.06.09