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单词 clitellum
释义
cli·tel·lum (klī-tĕləm)
n. pl. cli·tel·la (-tĕlə)
A glandular swelling of the epidermis of certain annelid worms, such as earthworms, that secretes a viscous fluid to form a cocoon in which the eggs are deposited.

[New Latin clītellum, sing. of Latin clītellae, packsaddle; see klei- in the Appendix of Indo-European roots.]
clitellum
of an earthworm
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