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[化] deactivation，inactivation，[半] passivation ；

[例句] 湿润的薄片需加热,以钝化抗营养的因素. Moistened flakes are heated to inactivate the antinutritional factors.

[例句] 有一种合理的解释是说腐蚀能够去掉并钝化微裂纹. One reasonable explanation is that etching removes and blunts microcracks.

slow (in thought or action)，obtuse，torpescence，thickness，bluntness ；

[例句] 卡萝尔心不在焉，反应有点迟钝。 Carol was absent-minded and a little slow on the uptake.

[例句] 人群毫无热情的迟钝反应使我感到很沮丧。 I'm depressed by the bovine enthusiasm of the crowd's response.

slow-witted，stupid，asininity，crassitude，imbecility ；

[例句] 他人不坏，就是有点儿愚钝。 He's not a bad man, just a bit dense.

[例句] 他的父母亲头脑愚钝又不善说话. His parents were dull and inarticulate.

[机]passivator ；

[例句] 本节只讨论其中的两类: 金属离子钝化剂和过氧化物分解剂. Only two types will be included in present discussion: metal - ion deactivators and peroxide decomposers.

[例句] 向焦炭表面喷洒钝化剂溶液可以改善焦炭热态强度. The hot strength of coke can be improved by spraying passivator on the surface of coke.

rust，obtund，failure ；

[例句] 他使刀口卷刃[变钝]. He turned the edge of the knife.

[例句] 这把便宜的刀容易变钝. This cheap knife dulls easily.

blunt，dull，[机] obtuse，pointless ；

[例句] 近乎鲁钝的天真使他坚守自己的信仰。 Naivety bordering on obtuseness helped sustain his faith.

[例句] 在几乎所有的情况下, 却使用钝的面不是尖的后缘. In almost all cases, blunt rather than sharp trailing edges are used.

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[例句] 开了一整天会我的头脑变迟钝了. My head became heavy after a whole day's meeting.

[例句] 不要让你的脑子在假期里变迟钝. Don't let your mind rust during the vacation.

blunthook ；

dully，obtusely ；

[例句] 排的瓶子在被弄暗的房间中钝地闪烁, 反映外面的氖. Rows of bottles gleamed dully in the darkened room, reflecting the outside neon.

dullness ；

[医]inactive ；

[例句] 钝性的力量作用于腹部. Blunt force is applied to the abdomen.

obtuse ；

[例句] 安全性:玻璃破碎后,碎片成钝角的细小碎块,对人体不会造成重大伤害. Safety performance minute glass won't harm the body seriously when the glass breaks into small parts.

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[例句] 叶对生或互生, 卵形或广卵形, 有波状钝齿. Of Health or alternate leaves, ovate or widely ovate, with wavy crenatum.

Barytheriidae ；

[医]dull ；

cogwheel ；

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