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oral cavity; mouth

① 体中。

lumen

body cavity

Japanese variety of music box (invented in 1892 by Toda Kindo)

cloaca

gun rifling

coelenteron

cloaca

pericardial cavity; pericardial space; cavitas pericardiaca

articular cavity; cavum articulare

pleural cavity

cleavage cavity; segmentation cavity

medullary cavity (of bone)

pulp cavity

amniotic cavity

blastocoel; blastocoele

Perisinusoidal space