al·i·bi /ˈæləbaɪ/ ●○○ noun [countableC] 1 PROVEsomething that proves that someone was not where a crime happened and therefore could not have done it 不在犯罪现场的证明a perfect/cast-iron/unshakeable etc alibi He had a perfect alibi and the police let him go. 他有不在犯罪现场的确凿证明,警方便放了他。
2. REASONan excuse for something you have failed to do or have done wrong 借口,托词