如果您不使用手机学英语，您觉得手机学英语的弊端是什么？

What is the advantages and disadvantage of learning English by way of mobile phones?

youdao

如果您不使用手机学英语，您觉得手机学英语的弊端是什么？

What is the advantages and disadvantage of learning English by way of mobile phones?

youdao