自1997年以来，美洲虎一直被列为濒危物种，这是野生物种面临生存危险的最高级别。
The jaguar has been listed as endangered since 1997, the highest level of peril for a wild species.
从研究田移除最高级捕食者导致一连串变化，最终清除海藻的小生物也会减少。
Keeping top predators away from study plots began a cascade of changes that eventually led to fewer small creatures grazing on algae.
1997年，美洲虎被列为濒危物种，这是野生物种面临生存危险的最高级别。
The jaguar has been listed since 1997 as endangered, the highest level of peril for a wild species.
在马特看来，进化链中最高级的 生物体吃这个不合适。
From Matt’s point of view, it was not a proper meal for the most exalted organisms in the evolutionary chain.
人类是生物进化史上的顶峰，是最高级的动物，这是就人类的整体功能而言的。
In general, in the evolutional history of life, Human being is the most developed animal.
人类是生物进化史上的顶峰，是最高级的动物，这是就人类的整体功能而言的。
In general, in the evolutional history of life, Human being is the most developed animal.
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