【医】 pericardium serosum
【医】 arcula cordis; bursa cordis; camera cordis; capsula cordis
capsule of heart; heart sac; heart-sac; pericardial sac; pericardium
theca cordis; vagina cordis
chorion
【医】 membranae serosa; serosa; serous coat; tunicae serosa
layer; region; stage; story; stratum; tier
【计】 layer
【医】 coat; lamella; lamellae; lamina; laminae; layer; strata; stratum