他们可以用手机上网搜索学习资料，这将会大大减少时间成本，让学习变得更加有效率。

They can search the study materials on line by using the cellphone, it will cut down much cost of the time, make the study more efficiently.

youdao

还可以插上一个可折叠的键盘，这样就可以在短信模式下进行文字录入了。我甚至还可以用手机上网。

I can plug it into a folding keyboard to type in message mode. I can even surf the net.

youdao

还可以插上一个可折叠的键盘，这样就可以在短信模式下进行文字录入了。我甚至还可以用手机上网。

I can plug it into a folding keyboard to type in message mode. I can even surf the net.

youdao