常見(jiàn)例句noun [ U ]If 2x = 3y and x = 6, then y = 4. 假設(shè)2x=3y且x=6，則y=4。The children on trial were referred to as child X and child Y. 受試兒童被稱(chēng)作兒童X和兒童Y。 返回 y