hardened
['hɑ:dənd]
adj.
变硬的，坚毅的;
v.
（使）变硬( harden的过去式和过去分词 );
（使）坚固;
（使）硬化;
（使）变得坚强;
例句:
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All of a sudden my heart hardened against her.
突然间我对她硬起了心肠。
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His smile died and the look in his face hardened.
他的笑容消失了，脸上的表情严肃了起来。
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She was hardened by the rigours of the Siberian steppes.
西伯利亚大草原的艰苦环境使她变得坚强起来。
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By last night the Government's line had hardened.
来自THETIMES
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His lifelong contact with tough men had hardened him.
来自R. K. Narayan
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Chill in the fridge until the mixture has hardened.
来自BBC