nanometer

例句：

1. 1. The microscope can magnify objects to the nanometer level.
   显微镜可以将物体放大到纳米级别。
2. 2. The new drug has been tested on a small group of patients in the nanometer range.
   新药已对一小部分患者进行了纳米级别的测试。
3. 3.The scientist used a microscope to observe the structure of the nanometer-sized particles.
   科学家使用显微镜观察了纳米尺寸粒子的结构。