black marks
Alternative form of cowpony
A transliteration of the Ukrainian surname Довгань (Dovhanʹ).
plural of black mark
(organic chemistry) Any of a class of aromatic heterocyclic compounds containing a ring of four carbon atoms and a nitrogen atom; especially the simplest one, C₄H₅N.
入居者が退去した後、家主は天井にいくつかの黒い跡があると指摘した。
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