Give the cardboard two or three coats of varnish to harden it.
在纸板上涂两三层清漆使其变硬。
柯林斯例句
Their action can only serve to harden the attitude of landowners.
他们的行动只会让土地拥有者的态度变得更坚定。
柯林斯例句
The varnish takes a few hours to harden.
清漆需要几个小时才能干透。
《牛津高阶英汉双解词典》
Hot steel is quenched to harden it.
烧热的钢放入水中骤冷使之坚硬.
《简明英汉词典》
The bitter split which has developed within Solidarity is likely to harden further into separation.
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。
柯林斯例句
Stoneware is fired at a high temperature to cause it to vitrify and harden.
在高温下烧制瓷器以至其成玻璃状，变硬。
辞典例句
Property prices are just beginning to harden again.
房地产价格刚开始重新趋于稳定。
辞典例句
Melted metal is poured into a mold to harden into shape.
熔化之金属倒入模子中以冷却成形.
辞典例句
You may leave the jelly in a cool place to harden it.
你可以把果子冻放在阴凉的地方,让它凝固.
辞典例句
God forbid that I should tell you to harden your hearts.
上帝不容我对各位说要心狠手辣.
辞典例句
The practical result was to harden the battle lines.
实际的结果就是双方壁垒更加分明.
辞典例句
To quench steel is that hot steel is quenched to harden it.
淬钢就是烧热的钢置入水中骤冷使之坚硬.
辞典例句
The soft concrete will harden till it is like stone.
水泥将变硬直到像石头一样.
辞典例句
They harden clay by putting it in a fire.
他们把粘土坯放在炉火里使其变硬.
辞典例句
The varnish takes a few minutes to harden.
清漆几分钟就能变硬.
辞典例句
Store employees looked at me like I'm some kind of hardened criminal.
出自-2010年12月听力原文When the molten rock of the earth’s core forced its way to the surface to form the throat of a volcano, as the centuries passed, the rock cooled and hardened, shrinkingand cracking into long columns.
出自-2016年12月听力原文"The wax hardened"
"The cold hardened the butter"
"temper steel"
"This trip will season even the hardiest traveller"
"He was inured to the cold"
