It's how quickly, how promptly we can recover from these painful emotions-- in other words, how strong our psychological immune system is.

区别在于他们能够多么迅速，多么快速地从痛苦情绪中恢复过来-,换言之，我们的心理免疫系统有多强。

哈佛公开课 - 幸福课课程节选