It's better for the doer to undo what he has done.
解铃还需系铃人。
We need more doers and fewer organizers.
我们需要实干的人多些,组织的人少些。
He is a doer, not a talker.
他是一个实干家,不是一个空谈者。
doer详细解释
do.er n.(名词)One who does something:做某事的人:例句:a doer of evil deeds.做坏事的人 A particularly active, energetic person:行动家:特别活跃,充满活力的人:例句:a real doer in party politics.一个政党的真正活跃分子