semimicro

例句：

1. 1. The microscope is used to examine microscopic objects.
   显微镜用于观察微观对象。
2. 2.The scientist used a semimicroscope to observe the sample.
   科学家使用一台半微镜来观察样本。
3. 3. The researcher found that the bacteria were only a few micrometers across.
   研究人员发现细菌只有几微米宽。