An airline hijacker might be caught on video or leave behind a ticket or other telltale clue to his identity.

一个客机挟持者可能被录像捕捉到，或者有机票和其它告密者，让我们找出他的身份。

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An asteroid impact is another possible cause of the extinction, though a telltale crater has yet to be found.

来之于小行星的撞击是物种灭绝的另一种可能的原因，尽管一个有报警作用的弹坑已经被找到了。

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Instead, the Bank of England tracks data on Internet searches for telltale terms. It has, for example, found that the trend in searches for "estate agents" can be a predictor of house prices.

英格兰银行取而代之地跟踪互联网上搜索指示词的数据，并得出结论，搜索词为“房产经纪人”的迹象很可能预示着未来房价。

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Instead, look for telltale signs that a flight is going to be grounded for example, a crowd of technicians with toolkits gathering at the gate.

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