头对头 Save Sign in to save words Traditional (Taiwan): 頭對頭 tóuduìtóu ㄊㄡˊ ㄉㄨㄟˋ ㄊㄡˊ head-to-head of clinical trial Character by character 头(tóu)head 对(duì)right 头(tóu)head A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0