Concrete

(noun.) a strong hard building material composed of sand and gravel and cement and water.

(verb.) form into a solid mass; coalesce.

(verb.) cover with cement; 'concrete the walls'.

(adj.) capable of being perceived by the senses; not abstract or imaginary; 'concrete objects such as trees' .

(adj.) formed by the coalescence of particles .

编辑:玛杰里

• The pouring of the entire house is accomplished in about six hours, and then the molds are left undisturbed for six days, in order that the concrete may set and harden. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• With this idea suggested, one might suppose that it would be a simple matter to make molds and pour in a concrete mixture. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• It was at this point that invention commenced, in order to produce a concrete mixture which would overcome this crucial difficulty. 弗兰克·刘易斯·戴尔. 爱迪生的生平和发明.
• There are over 50,000 tons of steel in the superstructure, and about 140,000 cubic yards of masonry and concrete in the foundation piers. Edward W. Byrn. 十九世纪发明进展.
• Education is the laboratory in which philosophic distinctions become concrete and are tested. 约翰·杜威. 民主与教育.
• Occupation is a concrete term for continuity. 约翰·杜威. 民主与教育.
• With Hegel the necessity of finding some working concrete counterpart of the inaccessible Absolute took an institutional, rather than symbolic, form. 约翰·杜威. 民主与教育.

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