根据五年来的观察，在5487种已知的哺乳动物中，有1141个种群受到威胁，有188个被列入最高级别“濒危灭绝”的物种名单上。
At least 1, 141 of the 5, 487 known species of mammal are threatened, with 188 listed in the highest risk "critically endangered" category.
更高级形式的动物，比如哺乳动物和鸟类，能够看、听、嗅、触摸和品尝。
Higher forms of animals, such as mammals and birds, can see, hear, smell, feel, and taste.
猴是自然界中最接近人类的动物，与人类同属哺乳动物中最高级的灵长类。
Monkeys are the closest animals with human in nature. It is the most advanced primates the same as human.
托诺尼和越来越多的科学家们认为，睡眠- - -不仅仅是在果蝇身上，而且在高级哺乳动物身上- - -也可能起到这种释放压力的作用。
Tononi and a growing number of other scientists believe that sleep - not just in flies but also in higher-order mammals - may perform such a pressure-releasing role.
托诺尼和越来越多的科学家们认为，睡眠- - -不仅仅是在果蝇身上，而且在高级哺乳动物身上- - -也可能起到这种释放压力的作用。
Tononi and a growing number of other scientists believe that sleep - not just in flies but also in higher-order mammals - may perform such a pressure-releasing role.
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