One challenge that squirrels face, well many small mammals do, is that because of their size, sweating would make them lose too much moisture.
松鼠面临的一个挑战是,因为它们体型小,出汗会使它们失去太多水分,其他许多小型哺乳动物也面临着这样的问题。
Second, face-to-face contact allows us to size up others.
第二,面对面的接触让我们能够评估他人。
Boskop has a face that takes up only about one-fifth of his cranium size, closer to the proportions of a child.
而博斯·科普头骨的脸只占整个颅骨大小的五分之一,接近于儿童的水平。
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