An animated line moves with the page turn to make it easier to keep track of your location in the text.

一个动画线条和翻页一起移动使在文本中记录你的位置更加容易。

youdao

An animated line moves with the page turn to make it easier to keep track of your location in the text.

一个动画线条和翻页一起移动使在文本中记录你的位置更加容易。

youdao