labrum
labrum[ˈleɪbrəm](pl. labra -brə)- (Zoology)a structure corresponding to a lip, especially the upper border of the mouthparts of a crustacean or insect
(动)(尤指昆虫的)上唇
派生labraladjective语源- early 18th cent.: from Latin, literally lip'; related to labium
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