1.[i][t]（使）变硬，硬化to become or make sth become firm, stiff or solid
The varnish takes a few hours to harden.清漆需要几个小时才能干透。
a method for hardening and preserving wood硬化和保存木料的方法
2.[i][t]（使声音、面孔等）更严肃，更严厉if your voice, face, etc.hardens , or youharden it, it becomes more serious or severe
Her face hardened into an expression of hatred.她的脸沉下来，面带恨意。
He hardened his voice when he saw she wasn't listening.看到她没在听他讲话，他声音严厉起来。
3.[i][t]（使）更坚定，更强硬if sb's feelings or attitudesharden or sb/sthhardens them, they become more fixed and determined
Public attitudes to the strike have hardened.公众对这次罢工所持的态度已强硬起来。
Their suspicions hardened into certainty.他们由怀疑变成肯定。
The incident hardened her resolve to leave the company.这件事使她更加坚定了离开公司的决心。
4.[t][usupass]~ sb/sth/yourself使变得无情；使不被打动to make sb less kind or less affected by extreme situations
Joe sounded different, hardened by the war.乔让人觉得变了，因战争变得冷酷无情了。
They were hardened criminals(= they showed no regret for their crimes) .他们都是死不悔改的罪犯。
In this job you have to harden your heart to pain and suffering.做这项工作面对伤痛和折磨时你得保持沉着冷静。
Once the plastics harden and are removed from the molds, the fingers are ready to be hooked up to a base.
一旦塑料变硬，并去除掉模具，手指就可以连接到基座上了。
One day for fresh airthey put him in the garden. His face went deathly paleand his body began to harden.
一天他们把他带到花园去享受清新的空气，然而他的脸变得死灰，身体也开始变得僵硬。
The gods do not spoil a good man by too much tenderness; they prove him, harden him, and prepare him for Themselves.
诸神不会用太多温和宠坏一个好人；祂们会试炼他，使他坚强，并让他们为自己做好准备。
Paint one color at a time onto the surface of the mold and allow it to harden before moving on to the next color.
在模具表面每次着一种颜色，并让其在着下一种颜色前变硬。
Views about just how much trouble will harden after November's midterm elections.
11月的中期选举过后，对于他有多大麻烦将得出定论。
The floor of the forest was soft to walk on; the frost did not harden it as it did the road.
森林里边的地走起来软软的；冰霜还没有把它凝结得象山路那么硬。
Since a DMZ is the front line defense against potential intruders, special care must be taken to harden this server.
因为DMZ是防范潜在入侵者的第一道防线，所以必须特别注意加强此服务器。
revolves around the ability of a thermoplastic material to be softened by heat and to Harden when cooled.
注射成型的基本概念是使热塑性材料在受热时熔融，冷却时硬化。
He has said he would harden sanctions but has also held out the possibility of direct talks.
他曾表示，他将加大对伊制裁力度，但同时也表示不排除直接对话的可能。
Recommended substrate: Harden PC, harden PMMA, the surface of UV coating, electroplating layer, stainless steel, stone, marble, glass, etc.
适用基材：加硬PC，加硬PMMA，UV漆面，电镀面，不锈钢，石头，大理石，玻璃等。
We see it in the Middle East, as the conflict between Arabs and Jews seems to harden.
在中东，随着阿拉伯人与犹太人之间的冲突似乎深化，我们看到了这种情形。
The mismatch between ion implant and the surface of a metal creates atomic defects that harden the surface.
离子注入和金属表面之间的错配产生了硬化表面的原子瑕疵。
The effect of the war is to harden this pose of casual cynicism into a rock-bottom despair.
战争结果把原来荒唐的玩世不恭态度变成了一种彻底的绝望。
Turkish- Cypriots said the decision would harden opposition to plans to reunite the island.
土耳其裔塞浦路斯人称此项决定将使统一岛屿计划的反对方受益。
She lets them sit for a day or two in a warm place so the soap can dry and harden.
她让他们坐在一个温暖的地方一两天，因此肥皂可以干，变硬。
Mr Berlusconi's resistance to structural reform appeared to harden as the country's problems deepened.
随着意大利危机的加深，贝卢斯科尼对国家结构改革的抵触似乎变得更加根深蒂固。
As lava moves through a channel, overflows build natural levees along the sides, which can eventually connect and harden, forming a canopy.
由于熔岩的举动透过管道，建立自然溢出堤防沿线两岸，最终可以连接和硬化，形成一个天篷。
As snow falls, it builds up layer upon layer. With enough time, the layers will harden and bond to one another.
雪下落时，会在地面上层层累积。只要时间足够，这些雪层就会变硬并相互结合。
The pop star's inert brain must "harden" for at least two weeks before doctors can conduct their neuropathology tests.
杰克逊死亡的大脑必须经过至少两周的“硬化”，医生们才能进行神经病理学检验。
Authorities said the substance would continue to harden over time and could continue to slow the flow of water.
当局说，这种物质会随着时间继续变硬，会持续减缓水的流动。
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