Blue Dogs
(geometry) The single (up to logical equivalence) geometry whose axiomatic system is equivalent to that of Euclidean geometry without the parallel postulate or any alternative.
The quality of being isosynchronous.
plural of Blue Dog
plural of running serviceberry
青い犬たちは縁側でくつろぎ、昼下がりの太陽がその珍しい毛並みを温めていた。
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