The viscera are enclosed each in a
membrane1. For they require some covering to protect them from injury, and require, moreover, that this covering shall be light. To such requirements membrane is well adapted; for it is close in
texture2 so as to form a good protection,
destitute3 of flesh so as neither to attract humour nor retain it, and thin so as to be light and not add to the weight of the body. Of the
membranes4 those are the
stoutest5 and strongest which invest the heart and the brain; as is but consistent with reason. For these are the parts which require most protection, seeing that they are the main governing powers of life, and that it is to governing powers that guard is due.
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1
membrane
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| n.薄膜，膜皮，羊皮纸 |
参考例句： |
- A vibrating membrane in the ear helps to convey sounds to the brain.耳膜的振动帮助声音传送到大脑。
- A plastic membrane serves as selective diffusion barrier.一层塑料薄膜起着选择性渗透屏障的作用。
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2
texture
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| n.(织物)质地；(材料)构造；结构；肌理 |
参考例句： |
- We could feel the smooth texture of silk.我们能感觉出丝绸的光滑质地。
- Her skin has a fine texture.她的皮肤细腻。
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3
destitute
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| adj.缺乏的；穷困的 |
参考例句： |
- They were destitute of necessaries of life.他们缺少生活必需品。
- They are destitute of common sense.他们缺乏常识。
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4
membranes
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| n.（动物或植物体内的）薄膜( membrane的名词复数 )；隔膜；（可起防水、防风等作用的）膜状物 |
参考例句： |
- The waste material is placed in cells with permeable membranes. 废液置于有渗透膜的槽中。 来自辞典例句
- The sarcoplasmic reticulum is a system of intracellular membranes. 肌浆网属于细胞内膜系统。 来自辞典例句
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5
stoutest
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| 粗壮的( stout的最高级 )； 结实的； 坚固的； 坚定的 |
参考例句： |
- The screams of the wounded and dying were something to instil fear into the stoutest heart. 受伤者垂死者的尖叫，令最勇敢的人都胆战心惊。
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