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。
One challenge that squirrels face, well many small mammals do, is that because of their size, sweating would make them lose too much moisture.
第一种组合形式是一个小型的多用途桌子和一个带有护栏和支脚的小婴儿床。
The first combination form is a small multiple use table and an infanette with guard rails and feet.
一方面，大型动物的脚相对它们的身体来说就算是小的，当然这是和小型动物相比。
For one thing, big animals' feet are smaller relative to their bodies than are smaller beasts'.
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