non·func·tion·al /-ˈfəŋ(k)ʃnəl, ʃənḷ/ 形容詞
無功能的
nonfunctional
adj 1: not having or performing a function [ant: functional]
2: not performing or able to perform its regular function; "a
malfunctioning valve" [syn: malfunctioning] [ant: functioning]