首先，他们发现，网上购物实用有效。

Firstly, they found, there were the practicalities.

youdao

不是，但是一个很实用有效的解决办法，并且十分重要。

No, but it's a very a practical solution that works and that's really important.

youdao

这是家长无法回避的问题。我这里给这些家长，提供几条简单实用有效的建议。

Solid, simple, and sensible advice for parents dealing with the inevitable challenges of homework.

youdao