连词成句 help time to volunteer their others they

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连词成句helptimetovolunteertheirothersthey连词成句helptimetovolunteertheirothersthey连词成句helptimetovolunteert

连词成句 help time to volunteer their others they
连词成句 help time to volunteer their others they

连词成句 help time to volunteer their others they
They volunteer their time to help others.

They give up their time to volunteer to help others.
意思就是他们放弃自己的时间去自愿帮助别人
volunteer to do sth 自愿做某事,是个固定短语