1 V-ERG （使）变硬;（使）硬化 When something hardens or when you harden it, it becomes stiff or firm. （使）变硬;（使）硬化
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Mould the mixture into shape while hot, before it hardens. [VERB]
在混合物还没有变硬之前，趁热将它塑成形。
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Give the cardboard two or three coats of varnish to harden it. [VERB noun]
在纸板上涂两三层清漆使其变硬。
SYN solidify, set, freeze, cake
2 V-ERG （使）（态度、想法）变得更坚定;（使）变得更强硬 When an attitude or opinion hardens or is hardened, it becomes harsher, stronger, or fixed. （使）（态度、想法）变得更坚定;（使）变得更强硬
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Their action can only serve to harden the attitude of landowners. [VERB noun]
他们的行动只会让土地拥有者的态度变得更坚定。
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The bitter split which has developed within Solidarity is likely to harden further into separation. [VERB]
团结工会内部已产生的不愉快分歧可能会进一步演变为分裂。
SYN reinforce, strengthen, fortify, steel
3 VERB （价格、经济）变得更稳定 When prices and economies harden, they become much more stable than they were. （价格、经济）变得更稳定
4 V-ERG （使）变得坚强;（使）变得冷酷无情;（使）变得麻木不仁 When events harden people or when people harden, they become less easily affected emotionally and less sympathetic and gentle than they were before. （使）变得坚强;（使）变得冷酷无情;（使）变得麻木不仁
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Her years of drunken bickering hardened my heart. [VERB noun]
她多年来醉酒寻衅的恶习让我变得麻木。
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She was hardened by the rigours of the Siberian steppes. [VERB noun]
西伯利亚大草原的艰苦环境使她变得坚强起来。
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All of a sudden my heart hardened against her. [VERB + against]
突然间我对她硬起了心肠。
SYN accustom, season, toughen, train
5 VERB （表情、眼神）变得严肃，变得不快 If you say that someone's face or eyes harden, you mean that they suddenly look serious or angry. （表情、眼神）变得严肃，变得不快
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