adj. 
效的
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down-counter,
downcountry,
downcourt,
downcut,
downcutting,
downcycle,
downdip,
down-Doppler,
downdraf,
downdraft,
相似单词
homostyly,
homosulfaminum,
homosulphamine,
homosynapsis,
homosyndesis,
homotactic,
homotaxial,
homotaxic,
homotaxis,
homotectic,