open circulatory system
A chant, hymn or song, especially a nonmetrical one, with words from a biblical text.
A system of circulation which is achieved primarily from the heart beating and muscle-induced locomotion of the organism, circulation without veins.
plural of VR
A tiny, often irregular pearl. / Some minute pearls worked into a bedding.
多くの節足動物は、心臓の収縮と筋肉の動きによって主に駆動され、静脈を持たない循環で体内に栄養を分配する開放血管系に頼っている。
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