existing in material form; that can be touched, felt, etc.
"concrete objects such as trees"
"concrete the walls"
Metaphysical ideas so vague as to be inapplicable to concrete cases.
出自： R. Fry
The concept is rendered concrete by the image of Cupid.
出自： Y. Winters
I was to announce the Bond as a concrete proposal.
出自： H. Macmillan
My witnesses aren't entirely dependable. We need concrete evidence.
出自： R. Macdonald
Ochreous sand, concreted..into a kind of stone.
出自： C. Lyell