通过反复观看恐怖电影，他逐渐对恐怖场景产生了脱敏反应。

By repeatedly watching horror movies, he underwent ___desensitization to scary scenes.

花生过敏的脱敏治疗可能需要几个月才能见效。

Peanut allergy ___desensitization therapy may take several months to show results.

长期观看恐怖片可能会导致对暴力场景的麻木。

Watching horror movies frequently may lead to ___desensitization to violent scenes.