Please do it at your leisure.

请你在空暇时间做一下。

《新英汉大辞典》

Please do me the courtesy of listening to what I'm saying.

请耐心听一听我的话。

《牛津词典》

Please do not hesitate to contact me if you have any queries.

如果有疑问就请尽管和我联系。

《牛津词典》

Please raise your right hand and repeat after me. I, George Walker Bush, do solemnly swear...

VOA: special.2009.01.19

Please do it carefully, and I might even hand out a little bit of a study guide to help you with that.

希望大家认真阅读,我会发学习指南，来帮助大家。

耶鲁公开课 - 旧约导论课程节选

But if you say "Would you please do something?",

但如果你说“能请你帮我做某事吗？”

Would you please 课堂 - SpeakingMax英语口语达人

However, if our office can be of further assistance, please do not hesitate to contact us.

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Please do comment below or on the Names You Need To Know page.

FORBES: Names You Need To Know In 2011: Natural Capital Project

Please do not hesitate to contact any of the team members listed below with any questions.

ENGADGET: Dell bidding war afoot as Blackstone Group and Carl Icahn both make offers (update: confirmed)