Can I have your attention please?

请注意听我讲话好吗？

《牛津词典》

May I have your attention please?

请大家注意了。

youdao

Ladies and gentlemen! Can I have your attention, please?

女士们，先生们，请大家注意！

《牛津词典》

"Your attention please, ladies and gentlemen. Here is the Yankee line-up.

VOA: special.2010.07.26

The final piece of advice, this is very important so please pay attention to this, which is, I ask you not to talk to your neighbors during lecture.

最后一点建议,很重要,请注意听好,我要求你们,上课的时候,请不要和你的周围的同学说话

耶鲁公开课 - 基础物理课程节选

Unidentified Male: If I can have your attention please, can everyone hear me?

NPR: Jindal Faces a Test in Taming Louisiana Politics

Mr. SCHWARTZ: Can I have your attention please?

NPR: New Citizenship Test Gets Dry Run

Now that's over, please turn your attention to next week's offerings.

BBC: Amazing tales from Planet Tabloid