pen pal
US /ˈpen pæl/
UK /ˈpen pæl/

名词
1.
笔友
a person with whom one exchanges letters, especially regularly, but who is not a close friend
示例:
•
I've had a pen pal in Japan for five years.
我在日本有一个笔友五年了。
•
She enjoys writing to her pen pal about her daily life.
她喜欢给她的笔友写信,讲述她的日常生活。
同义词:
在 Lingoland 学习这个单词