Jill volunteered to organize a petition.

吉尔自告奋勇组织请愿。

《牛津词典》

I volunteered to weed the hospital garden.

我自愿给医院的花园除草。

youdao

Aunt Mary volunteered to clean up the kitchen.

玛丽姨妈主动要求打扫厨房。

《柯林斯英汉双解大词典》

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

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

The poll had 100 respondents who volunteered to answer the survey and were not randomly selected.

FORBES: Protecting a business against partners' credit woes

This year, for the first time, Alan volunteered to work at a Crisis at Christmas daycentre.

BBC: Today

The boss immediately volunteered to set her up with multiple contacts he had there.

FORBES: How to Quit With Class