動詞 desensitize:

1. cause not to be sensitive
   同義詞：desensitise
2. make insensitive
   同義詞：desensitise

de.sen.si.tize

v.tr.（及物動詞）
de.sen.si.tized,de.sen.si.tiz.ing,de.sen.si.tiz.es
To render insensitive or less sensitive.
使降低敏感性：使不敏感或降低敏感性
Immunology To make (an individual) nonreactive or insensitive to an antigen.
【免疫學(xué)】 使減感：使（某個體）對某抗原不敏感或不發(fā)生反應(yīng)
To make emotionally insensitive or unresponsive, as by long exposure or repeated shocks:
使麻木：由于長期或反復(fù)地受到震驚使情感上不敏感或無反應(yīng)：
例句：
.The successive assassinations and attempts, not just on Presidential figures but on Martin Luther King Jr. and others, have desensitized us.(Anthony Lewis)
.不僅僅是對總統(tǒng)級的人物，而且有對馬丁·路德和其他人的連續(xù)的暗殺或企圖，使我們變得冷漠麻木了.(安東尼·劉易斯)

To make (a photographic film or substance) less sensitive to light.
減低感光性：降低（照相底片）對光的敏感性

【引伸】
desen.sitiza.tion
desen.sitiz.er
n.（名詞）