Researchers have identified Mathieu as the first documented case of beat deafness, a condition in which a person can't feel music's beat or move in time to it.

他被研究专家定为第一个记录在案的节奏听障患者，患有此病的人感觉不到音乐节拍或跟着节拍活动。

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Stirling said polar bears and grizzlies have been successfully paired in zoos and that their offspring are fertile, but there had been no documented case in the wild.

报道说，此前，北极熊和灰熊曾在动物园内被配对成功，而且它们还生下了后代。 北极熊和灰熊这两种不同种类的熊，其繁殖期大致相同，但相比较而言，北极熊的繁殖期要比灰熊来得稍稍早一些。

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Case reports have documented rare cyst wall enhancement.

有记录有极少的囊壁强化病例。

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While numerous productive examples of crowdsourcing such as the Goldcorp case have been documented over time, these very same techniques increasingly are being exploited for criminal purposes as well.

FORBES: The Rise of Crime-Sourcing