While there, he volunteered as a music teacher at a youth center in the Dorchester neighborhood of Boston.

VOA: special.2010.11.04

The council on educational technology in MIT has Been doing that for MIT with the help from a couple Of consultants who've actually volunteered their time.

麻省理工教育技术委员会,在一些顾问的帮助下做着这项工作,这些顾问自愿牺牲他们的时间参与其中。

麻省理工公开课 - 媒体、教育、市场课程节选

He first became interested in studying infectious disease when he volunteered in Surinam during his medical training.

VOA: special.2011.05.25

They volunteered to join Tennessean Andrew Jackson to defend the city of New Orleans,Louisiana, against the British army in the War of Eighteen Twelve.

VOA: special.2009.08.23

He said he knew the organization was great because his sister had volunteered for it.

VOA: special.2009.04.03

Students from the Marriotts Ridge High School in Maryland volunteered for the project.

VOA: special.2009.10.06

She volunteered at Mother Teresa's home for orphans in Kolkata.

VOA: special.2009.08.10

Miz Francis has volunteered for social and environmental organizations.

VOA: special.2009.11.06

The owner of this auto shop in Maryland fixes Johnson's car brakes after hearing he volunteered for Meals on Wheels.

VOA: standard.2010.07.06

Close lives near the New York state prison, and volunteered there with a writing rehabilitation program.

VOA: standard.2010.05.18

Orunbai Suleimanov is a Kyrgyz who volunteered to patrol the ethnically-mixed Anoshin neighborhood of Osh.

VOA: standard.2010.06.15

"When I found a medieval abbey in France that said they had been baking for 1300 years, but had lost the last monk who knew how to bake bread, I volunteered to come over and bake some bread for them.

VOA: standard.2010.07.16