而这些功能的实现，往往要依靠基本物质单元在微尺度上的有序或无序组装。
These abilities are based on the regular and irregular assembly of basic mass units in the microscales.
原子：元素的特征性质保持不变的最小物质单元，也是在不释放带电粒子的情况下物质能够分割的最小单元。
Atom: Smallest unit into which matter can be divided and still retain the characteristic properties of an element.
他们发现基因中dna单链上的基因单元具有像开关一样的物质，该物质决定了人们的耳垢类型。
They then found that the switch of a single DNA unit in the gene determines whether a person has wet or dry earwax.
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