caducous
caducous[kəˈdjuːkəs]adjective- (chiefly Botany)(of an organ or part) easily detached and shed at an early stage
(主植)(器官,部位)早落的
语源- late 17th cent. (in the sense 'epileptic'): from Latin caducus 'liable to fall' (from cadere 'to fall') + -ous
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