失去亲人在他心里留下了一道难以愈合的伤口。

The loss of his loved one left a deep laceration in his heart that wouldn't heal easily.

laceration 来自拉丁语词根 lacer（撕裂），加上名词后缀 -ation 构成。本义指"撕裂伤、伤口"，在句中用作比喻，形容心理上难以愈合的创伤。