cement
/səˈmɛnt/ 名词 B2中文： 水泥、洋灰、士敏土
- A powdered substance produced by firing (calcining) calcium carbonate (limestone) and clay that develops strong cohesive properties when mixed with water. The main ingredient of concrete.
- The paste-like substance resulting from mixing such a powder with water, or the rock-like substance that forms when it dries.
- Any material with strong adhesive and cohesive properties such as binding agents, glues, grout.
- A bond of union; that which unites firmly, as persons in friendship or in society. · the cement of our love
- The layer of bone investing the root and neck of a tooth; cementum.
复数 cements
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Whole days have I passed in these Titanic efforts, considering my labor well repaid if, by night-time I had contrived to carry away a square inch of this hard-bound cement, changed by ages into a substance unyielding as the stones themselves; then to conceal the mass of earth and rubbish I dug up, I was compelled to break through a staircase, and throw the fruits of my labor into the hollow part of it; but the well is now so completely choked up, that I scarcely think it would be possible to add another handful of dust without leading to discovery.
They believe that reviewing what we learn helps cement the information in our minds.
The meticulous construction process required staggering quantities of Portland cement, a relatively novel material chosen specifically for its exceptional durability in damp conditions.
Bazalgette also insisted on exceptionally rigorous quality control, ensuring that every batch of cement was thoroughly tested before being utilized.
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