求翻译：4、 也许有人会说电话和书信也可以联系朋友和同学，可是昂贵的电话费也许是你首先应该考虑的问题。用网络联系时很方便和廉价的。是什么意思？

4, may be argued that calls and letters can also contact friends and classmates, but expensive telephone charges might be the first thing you should consider. Contact with the network when it is convenient and cheap.

4 * , some may say that you can also contact telephone and correspondence friends and fellow students, but expensive telephone charges are perhaps you should first consider the issue. When a network connection is very easy and cheap.

4th, Perhaps some people can say the telephone and the correspondence also may contact with the friend and schoolmate, but perhaps the expensive telephone bill is a question which you first should consider.With network relation when is very convenient and inexpensive.

4, it may be said that phone calls and letters or you may contact friends and classmates, but expensive phone bill may be the first thing you should consider the issue. When networking is convenient and cheap.

4, Perhaps someone will say that can contact friend and classmate with telephone and letter, but perhaps the expensive telephone rate is the question that you should consider at first. It is very convenient and low priced while using the network connection.