每次他们停留，我们看到一组词。

Each time they fixate, we see a group of words.

youdao

并且每次让一个孩子上去触摸屏幕来换下一组词。

And choose one kid to touch the screen to change each word.

youdao

并且每次让一个孩子上去触摸屏幕来换下一组词。

And choose one kid to touch the screen to change each word.

youdao