但后来，他把它们放在显微镜下观察，发现每个这些小小的，微不足道的贝壳唇部都有一个小孔。

But then he put them under a microscope and noticed that each of these small, insignificant shells had a tiny hole in its lip.

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许多人擅长于收集微型贝壳：贝壳的尺寸小于10毫米，因此需要用倍数在乘6、乘10甚至乘60的双目显微镜来观察这类贝壳。

THE MICRO SHELL COLLECTION Many people specialize in micro mollusks: shells smaller than 10 mm. A binocular microscope with x 6, x 10, and up tox 60 is needed.

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