... 原子长度标准：atomic length standard 原子;微粒，微量;极微小的东西：atom 原状岩心样品：intact rock sample ...
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从那时起，Seeman和其他一些化学家开始向人们展示他们可以用DNA来构造极微小的东西。例如，比头发细1000倍的立方体和八面体。
Since then, Seeman and other chemists have shown that they can use DNA to build really simple shapes such as cubes or octahedrons that are 1, 000 times thinner than a human hair.
从那时起，Seeman和其他一些化学家开始向人们展示他们可以用DNA来构造极微小的东西。例如，比头发细1000倍的立方体和八面体。
Since then, Seeman and other chemists have shown that they can use DNA to build really simple shapes such as cubes or octahedrons that are 1,000 times thinner than a human hair.
显微镜是一种你可以透过它观察到极微小东西的器械。
Microscope is an instrument through which you can see extremely tiny things.
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