At the end of your presentation, you may wish to open the floor to questions - to ask if anyone has any questions about your presentation.

你的演讲结束后你可能会留出自由问答时间，问下听众是否对你的演讲有问题。

youdao

The center of the museum is open, so people can look up toward the roof or down toward the ground floor.

VOA: special.2009.04.06

After that, we will open the floor for any questions about picking a story.

CNN: iReport roundtable: Boot camp, Week 2

At the end of the roundtable, we will open the floor to any additional boot camp questions.

CNN: iReport roundtable: Boot camp, Week 4

Let me now open the floor and take your questions.

UN: Secretary-General