oil and water
水火不相容的人或事物
口語·形容無法相處的人或物
英文釋義
two things or people that are fundamentally incompatible or do not mix well
例句
Those two are like oil and water; they never get along.
典故來源
源自物理現象：油和水無法混合，比喻性格或事物根本不相容。