(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
坎迪编辑