But virtual learning would leave tens of thousands behind.

但数万名学生无法参加线上学习。

But school systems are discovering that virtual learning can't replicate classroom instruction.

但是校方发现虚拟教学无法替代课堂教学。

The government there has encouraged schools to go back to virtual learning to avoid exposure to toxic air.

日本政府鼓励学校学生采取线上学习方式以避免接触有毒空气。

Some schools have gone completely remote with virtual learning only, others have a hybrid system a combination of in-person and virtual learning.

一些学校已经完全采用远程网络学习，而另一些学校则采取了混合教学法，将线下教学与网络教学结合。

Detroit Public Schools is having students take a survey about whether they want to take in-person learning or virtual learning.

底特律公立学校正在让学生们进行一项关于他们是想教室学习还是虚拟学习的调查。

In an era of virtual learning and internet everything, you might be wondering why we're talking about chalk at all.

在这个流行线上学习和互联网的时代，你可能会问为什么要讨论粉笔呢？

One study last year estimated during the switch to virtual learning, 3 million students dropped off the grid.

去年的一项研究估计，在转向虚拟学习期间，有 300 万学生离开了网络。

Over the past two years, students and teachers in many places have depended on virtual learning to slow the spread of the coronavirus.

在过去的两年里，许多地方的学生和老师都依靠网络教学来减缓新冠病毒的传播。

There's a debate raging about whether virtual learning is as effective as in-person learning and experts have voiced concerns that school closures may be taking a toll on student's mental health.

关于网上学习是否和面授学习一样有效，人们展开了激烈的辩论，专家们表示，学校关闭可能会对学生的心理健康造成损害。