"The wax hardened"
"The cold hardened the butter"
"temper steel"
"This trip will season even the hardiest traveller"
"He was inured to the cold"
You'd better harden in the ropes, the sails are not tight enough!
你最好拉紧大绳,帆绷得还不够紧。
Lava as it cools hardens into rock.
岩浆冷却后凝成岩石。
harden sth into sthHarden one's revolutionary will into steel.
把革命意志锻炼得钢铁般坚强。
When the onion plants have hardened off, we can plant them in the garden; they should be ready soon.
洋葱苗长壮后,我们就可以把它们移植到菜园里; 这些苗很快就可以移植。
harden sth ⇔ offWhat is the best way to harden off new rose bushes only a few inches high?
要想使只有几英寸高的玫瑰长壮以移植户外,什么办法最好?
Potted plants should be hardened off before planting out.
盆栽植物应经耐寒锻炼才能移植到室外。
He hardened early to a life of crime.
他很早就习惯了犯罪生涯。
harden sb to v-ingDo you think that John is becoming hardened to failing his driving test?
你是不是认为约翰对驾照考试的失败已麻木了?
Poor people often become hardened to suffering.
穷人常常变得能忍受苦难。
harden sb to sthThey've been hardened to the horrors of war.
他们对战争的恐怖已无动于衷了。
He became hardened to the suffering around him.
他对周围的苦难现象已见怪不怪了。
His heart hardened toward his nephews.
他对他的侄子们心肠很硬。