chalk sth up to experience
chalk /tʃɔːk/ 作名词是粉笔的意思，作动词则是用粉笔书写。再引申一点可以理解成标记，记录，获得等等。
to accept failure and learn from a particular experience
把…当作经验教训;接受失败并从中汲取教训
A: So your new job didn't work out very well?
那么你的新工作并不顺利?
B: No, it didn't, but never mind - chalk it up to experience.
是不顺利，不过没关系——就当是一次教训吧。