音标：[hɑ:dn]
vt. 使变硬, 使坚强, 使冷酷
vi. 变硬, 变冷酷
【机】 增加硬度, 使之硬化
相关词组:
harden sb to sth
在线英汉词典

harden的短语、例句：

harden v 1 (a) [I, Tn] (cause sth to) become hard, strong, unyielding, etc （使某事物）变硬、 变坚强、 变坚定等
The varnish takes a few minutes to harden. 清漆几分钟就能变硬.
Attitudes to the strike have hardened on both sides. 双方对罢工所持的态度更加强硬了.
For her own good, you must harden your heart, ie not allow yourself to show love, pity, etc. 替她著想, 你不能心软（不要流露自己的爱、 同情等）. (b) [esp passive 尤用於被动语态
Tn, Tn.pr] ~ sb (to sth) make sb less sensitive (to sth) 使某人（对某事）麻木不仁或毫不在乎
a hardened criminal, ie one who shows no sign of shame or repentance 怙恶不悛的罪犯
He became hardened to the suffering around him. 他对周围的苦难现象已经见怪不怪了. 2 (phr v) harden (sth) off (cause young plants, esp seedlings to) become strong enough for planting outside （使幼小植物, 尤指幼苗）增强耐受能力以备露天种植.