Do one's part

Definition: do something that is required of you, join in doing something that requires many people

定义：完成被要求做的事，加入需要多人完成的某事。

He feels that volunteering is doing his part.

他觉得志愿活动是他的责任。

Do you part and get along and you'll have no problems here.

做好你的事，保持下去，就没问题了。