Thoreau also helped runaway slaves and defended those who fought for the end of slavery.

梭罗也帮助那些逃跑的奴隶,并且和那些要求废除奴隶制度的人站在一起.

Joined an action group to help runaway slaves in 1850.

1850年加入一个帮助出逃奴隶的行动小组.