仅仅因为你已经在一间聊天室里给某人写信或者在电子邮件上方不意味着你认识这个人。
Just because you have written to someone in a chat room or over email does not mean that you know this person.
如果知道对方姓名，邮件中写上总是好的。如果这是你你第一次写信给某人，可以用下面任意一种方式开头。
It is always better to use somebody's name if you know it. If it is the first time you are writing to someone, use either of the following.
如果知道对方姓名，邮件中写上总是好的。如果这是你你第一次写信给某人，可以用下面任意一种方式开头。
It is always better to use somebody's name if you know it. If it is the first time you are writing to someone, use either of the following.
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