Leatherbacks do not have blubber, but they do have a reptilian equivalent: thick, oil-saturated skin, with a layer of fibrous, fatty tissue just beneath it.
棱皮龟没有鲸脂，但它们有和爬行类动物相似的结构：厚且含油的皮肤，下面有一层纤维，再下面是脂肪组织。
'Professors aren't used to needing such a thick skin, and they have to develop it if they want to work in business.'
教授们不习惯这样的厚脸皮，如果想在企业界工作，就不得不长出厚脸皮。
Polar bears have a thick oily fur coat and a layer of blubber under their skin.
北极熊也赋予他们的皮肤厚厚的皮大衣和油腻的脂肪层。
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