Today we are witnessing a sixth mass extinction, but unlike the others, the current loss of bio-diversity can be traced to human activity.
今天，我们正在见证第六次物种大灭绝，但与其它几次不同的是，目前生物多样性的丧失可以追溯到人类活动。
In the current Asian outbreak, the vast majority of cases have been traced to contact with animals.
自这一次禽流感在亚洲爆发以来，绝大多数病例都以与动物接触为病源。
The current financial crisis can be traced to three of the central ideas of the Reagan - Thatcher era: the promotion of home ownership, financial deregulation and a fervent faith in the market.
当前的金融危机可溯源到里根·撒切尔时代的三种核心思想：提倡拥有住房、放宽金融监管和强烈信奉市场。
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