hardens; hardened; hardening
hardens; hardened; hardening
Learner's definition of HARDEN
1
: to become hard or firm or to make (something) hard or firm(使)变硬,坚固,硬化 [no object]
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It will take several hours for the concrete to harden (into a solid block).混凝土需要数小时才能变硬。
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The gel hardens quickly.凝胶很快就变硬了。
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The presence of certain substances in the blood can cause the arteries to harden.血液中某些物质会造成动脉硬化。
[+ object]
2
: to become more definite and strongly felt or to make (something) more definite and strongly felt(使)更强硬,更坚定 [no object]
[+ object]
3
[+ object] : to make (someone) hard : to make (someone) less emotional and less likely to feel sorry for other people(使某人)变得冷酷无情,缺乏同情心,变得麻木不仁 4
[no object] : to begin to be or seem harsh, angry, serious, etc.变得严厉;变得严肃;开始动怒
harden your heart
◊ If you harden your heart or if something hardens your heart, you stop having kind or friendly feelings for someone.不留情面
— hardener
/ˈhɑɚdnɚ/ noun, plural hardeners [count]
— hardening
noun [noncount]