通过反复观看战争纪录片，他逐渐对暴力场景产生了脱敏反应。

By repeatedly watching war documentaries, he underwent ___desensitisation to violent scenes.

医生建议通过逐步增加接触花生来进行脱敏治疗。

The doctor suggested ___desensitisation therapy by gradually increasing exposure to peanuts.

反复观看恐怖片可能导致对这种内容的心理脱敏。

Repeatedly watching horror movies may lead to psychological ___desensitisation to such content.