So I could just select some texts and highlight it.

所以我可以选择一些文本并突出显示它。

And selecting text, just put your finger down, and drag out a selection.

然后选择文本，把手指放下，拖出一个选择。

You can actually select the text you want it to speak out, play, and repeat.

你可以选择你想听、播放和重复听的文本。

You can change the font style or size by selecting the text and then making the change on the toolbar.

海伦：您可以通过选择文本然后在工具栏上进行更改来更改字体样式或大小。