"dead giveaway" in Chinese (Simplified)
明显的线索暴露无遗
Definition
“明显的线索”指的是非常明显地暴露了事实或秘密的事情，常常是无意间泄露的。
Usage Notes (Chinese (Simplified))
该说法属于口语，常用于指某个迹象将真相暴露无遗，比如揭穿谎言或秘密。不是指微弱的暗示，而是非常明显的线索。
Examples
Her nervous smile was a dead giveaway that she was lying.
她紧张的笑容是她在撒谎的**明显的线索**。
The muddy shoes were a dead giveaway that the kids played outside.
沾满泥巴的鞋就是孩子们在外面玩的**明显的线索**。
His accent was a dead giveaway that he wasn’t from here.
他的口音是他不是本地人的**明显的线索**。
That lipstick on his collar? Total dead giveaway.
他衣领上的口红？简直就是**明显的线索**。
He tried to hide the surprise party, but the decorations were a dead giveaway.
他试图隐瞒惊喜派对，但那些装饰就是**明显的线索**。
Don’t tell her you love dogs if you’re allergic—your sneezing will be a dead giveaway!
别说你爱狗，如果你过敏——你打喷嚏就是**明显的线索**！