一一对应 Traditional 一一對應 yī yī duì yìng 🔊 one-to-one correspondence + Keep this word Meanings yī yī duì yìng 一一對應 one-to-one correspondence Its characters 一yīoneHSK 1对duìright; correctHSK 1应yīngto agree (to do sth)HSK 7–9