单词	counter hoop
释义	counter hoop noun : the outer hoop that clamps and tightens a drumhead Word History Etymology counter entry 6
随便看	hypotrochoids hypotype hypotypic hypotypical hypotyposes hypotyposis hypovalve hypovanadate hypoventilations hypovitaminoses hypovitaminosises hypovitaminosisses hypovolaemia hypovolemia hypovolemiae hypovolemias hypovolemic hypoxaemia hypoxaemias hypoxanthine hypoxanthines hypoxemia hypoxemias hypoxemic hypoxes

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