crossroads friends的意思 还有just friends的意思

just friends 朋友一场
crossroads friends在人生的某一关键时刻出现的朋友

【关于crossroads friends的参考文章，这里讲了crossroads friends有两种，一种是某一特定时刻交到的同甘共苦的朋友，另一种是忘年交】
Crossroads friends have two kinds. One kind is friends with whom we share friendship at a crucial time of life in the past. For instance our college roommates or our colleagues. When some tasks are assigned to achieve with others just like colleagues, we will work together. At last, we enjoy the joy of success together. Then the friendship is set up between us. The other kind is friends who link between each other and cross-generation friends. This kind of friends is either much older or much younger than us, but the relationship is close and intimate, just like my little aunt and I. My little aunt is about 10 year younger than my mother. But I like her very much. We all get together to have heart-to-heart talk. I will tell her my secrets, and she will teach me a lot of things. She will tell me something about herself and then ins