n.通信朋友,笔友;
例句:
Lucy visited her pen friend last weekend.
上周末露西拜访了她的笔友.
You have just received this letter from your Australian pen friend.
你刚刚收到来自澳大利亚的笔友的信.
What do you intend to sent to your pen-friend this Spring Festival?
今年春节你打算给你的笔友寄点 什么 ?