于是我找了把更锋利的刀顺向纵切。

So I use a sharper knife and make a smooth and straight cut.

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这玄武岩断崖暴露的形式一个巨大的纵切面释放它的整体高度。

This basalt precipice is exposed in the form of a huge longitudinal section which releases it on its whole height.

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管腔纵切面：单层立方上皮衬于管腔内。一些立方细胞之间的边界相当清晰明显。

Simple cuboidal epithelium lining a tubule (longitudinal cut). Some of the cell boundaries between "blocks" or "cubes" here are quite distinct.

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