中译英,语法要准确,我演讲的主题就关于这个根据短文内容回答下列问题

Does anybody know the meaning of this sentence?
The topic of my presentation is about this.
Answer the following questions according to the content of the passage.

Did all of us know the meaning of the sentence?
The topic of my speech is about this.
Answer the following questions , according to the passage

可以这么说：
Do you know what this sentence means?
The theme of my speech is about this.
Please answer the following questions according to the context.