activin
/'æktəvɪn/ /ˈæktəvɪn/
n. 
活素；
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isograph, isography, isogredient, isogrid, isogriv, isoguanine, isoguvacine, isogyre, isogyres, isohabitu,
相似单词
actively, actives, activetype, activevocabulary, ActiveX, activin, activise, activism, activist, activity,