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- Harden up a little, we need more speed. 把帆索拉紧一点，我们需要加快速度。
- Asphalt is used for making road surfaces. 沥青常用于铺路。
- Hot steel is quenched to harden it. 烧热的钢淬火使它坚硬。
- The varnish takes a few minutes to harden. 清漆几分钟就能变硬。
- He covered over the hole in the roof with a piece of asphalt felt. 他用一块沥青油毡盖住了房顶的漏洞。
- Don't harden your heart against him. 别对他硬心肠。
- asphalt hardening 沥青硬化
- The workers mixed the asphalt with sand and gravel together. 工人们把沥青和沙子、石块混合在一起。
- So we find that hardening operation is made up of heating and quenching. 因此我们发现淬火工序包括加热和淬硬两个步骤。
- Please harden in the main ropes, the sail's not tight enough! 请把主要的绳索拉紧些，帆扯得不够紧！
- Anneal means make harden steel soft and remove brittleness. 退火就是使淬火钢变软并消除其脆性。
- Able to set and harden under water, as Portland cement. 在水中变硬的能在水下定型并变硬的，如波特兰水泥
- He often went to the gym to harden his muscles. 他过去常到健身房锻炼肌肉。
- Coarse crumb rubber is apt to deposit in asphalt. 粗的橡胶颗粒容易在沥青中沉淀。
- They harden clay by putting it in a fire. 他们把粘土坯放在炉火里使其变硬。
- The road was metalled, then asphalt was laid. 道路被铺上碎石子，然后再铺以沥青。
- The asphalt pavements are very clean. 那些沥青的铺道，是很干净的。
- They let the liquid harden on a glass surface. 并让液体在玻璃表面硬化，
- The bylaws forbid play ball in the public harden. 地方法规规定任何人不得在公园打球或踢球。
- They harden clay by putting it in a fire . 他们把粘土坯放在炉火里使其变硬。
