大脑有左右两侧，称为 脑半球 ，由一带状纤维（ 胼胝体 ）在中间连结，从而使得两个脑半球能够互相通信。

The cerebrum has right and left halves, called hemispheres, which are connected in the middle by a band of nerve fibers (the corpus collosum) that enables the two sides to communicate.

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淀粉和纤维素都由多糖分子构成，只不过连结方式不同，而且发酵也以糖为能源。

Both starch and cellulose consist of sugar molecules, linked together in different ways, and sugar is what fermentation feeds on.

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大脑有左右两侧，称为脑半球，由一带状纤维（ 胼胝体）在中间连结，从而使得两个脑半球能够互相通信。

The cerebrum has right and left halves, called hemispheres, which are connected in the middle by a band of nerve fibers (the corpus collosum) that enables the two sides to communicate.

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