Will you sponsor me for a charity walk I'm doing?

我正在参加竞走义赛，请您捐款好吗？

《牛津词典》

A charity walk is a fund-raising event.

慈善步行是个募集资金的活动。

youdao

He took a leaf out of Danny's book and joined the charity walk.

他以丹尼为榜样，参加了慈善步行活动。

youdao

Eighty-five percent of the donations from the walk go to Susan G.Komen for the Cure, a charity organization.

VOA: special.2009.11.02

Davies misses both tournaments as she is taking part in a charity walk along the Great Wall of China.

BBC: SPORT | Golf | Gustafson holds off Davies to win

Police officers are taking part in a charity walk around the Greater Manchester boundary in memory of two officers who were killed on duty.

BBC: PC Fiona Bone and PC Nicola Hughes

"Whilst driving through Ipswich one Sunday night, I happened upon the huge stream of woman doing The Midnight Walk for charity, " said James.

BBC: Lads and Dads walk in Ipswich for EACH Treehouse Appeal