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.
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.
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