nano-

例句：

1. 1.The nanometer is a unit of measurement used to measure the size of objects on a scale of one billionth of a meter.
   纳米是用于测量物体尺寸的单位，其尺度为一亿分之一米。
2. 2. In nanotechnology, scientists are working on developing materials that can be used in electronics and other industries.
   在纳米技术领域，科学家们正在研究开发可用于电子和其他行业的材料。
3. 3. The nanometer is so small that it cannot be seen with the naked eye.
   纳米非常小，肉眼无法看见。