hypotrochoid
英[haɪpə\'trəʊkɔɪd] 美[haɪpə\'troʊkɔɪd]
hypotrochoid
hancehemicyclichearkenhyperstabilityhydroformhydraulicityhostnamehurryhydrocalhaloidhagberryhexanehunterhypomineralizationhypoploidyhapticalhydroxymethylfurfuralHookehomocentrisityHoratian