In the past, content owners have used identification methods as a means of identifying unauthorized content for the sake of calling out the attack dogs and sending take-down notices.

过去，内容所有者通常采用识别技术来判断未经授权的内容使用，并主动出击，追讨责任。

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Most dogs will not attack unless provoked.

大多数狗受到挑衅才会攻击。

《牛津词典》

Despite several mishaps—including a polar bear attack that ended with one crewman bitten and two dogs dead—the first two years of the journey were oddly easy.

除了发生过几件不幸的事情（包括一次导致一人被咬伤两只狗被咬死的北极熊袭击事件），头两年的航程出奇地顺利。

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Saadat said the range of products is huge, from desk chairs and laptop computers to attack dogs and body armor.

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New Jersey's Bob Torricelli, who quickly emerged as one of the Democrats' lead attack dogs, summed up Sullivan's testimony with biting sarcasm.

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They say Mr Brown's "attack dogs" are not afraid to brief against ministers or MPs seen as disloyal, and have bullied journalists who have written unsympathetic stories.

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