It does point out that many parents still limit electronic reading, mainly due to concerns about increased screen time.

它确实指出，许多家长仍然限制电子阅读，主要是担心孩子们看屏幕的时间越来越长。

youdao

It is mainly about Sophie's search for her father.

它主要讲的是苏菲寻找父亲的故事。

youdao

This passage mainly talks about the Double Third Festival and how people celebrate it.

这篇文章主要讲“三月三”和人们如何庆祝这个节日。

youdao

"Even though Clinton's visit was mainly about the release of the two female journalists, in the bigger picture it was beneficial for both parties.

VOA: standard.2009.12.30

But it's mainly about Iraq.

NPR: The Issue of Iraq Policy Change Takes Hold in Washington

But if money remains cheap, it is mainly because of worries about deflation.

ECONOMIST: American banks

And its services business is mainly about keeping IT systems running, not about helping firms reinvent themselves (as IBM does).

ECONOMIST: HP��s grand vision