His fingerprints were the [ a dead ] giveaway.

他的指纹成为暴露他真面目的关键.

辞典例句

Mother tried to hide her feelings, but the tears in her eyes were a dead giveaway.

母亲努力掩饰自己的感情, 但是她眼里的泪水完全泄露了她内心的秘密.

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The smile on your face was a dead giveaway that you got the job.

你脸上的笑容透露了你已获得了那份工作.

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She tried to hide her feelings, but the tears in her eyes were a dead giveaway.

她尽量隐藏她的情感, 但她眼中的泪水却正巧泄漏了马脚.

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