hyperactivity

n. 活动过强; 活动亢进; 活动增强

hydrofoil, hydrogen, hydrogen bomb (also H-bomb), hydrogen peroxide, hydrometer, hydrophobia, hydroplane, hydroponics, hydrotherapy, hyena (also hyaena), hygiene, hygienic, hygienically, hymen, hymn, hymnal, hyp-, hypo-, hype, hyper-, hyperactive, hyperbola, hyperbole, hyperbolic, hyperbolical, hypercritical, hypercritically, hypermarket, hypersensitive, hypersensitivity, hypertension, hyphen, hyphen, hyphenate, hyphenation, hypnosis, hypnotic, hypnotism, hypnotist, hypnotize, hypnotize, hypnotise, hypo,