a.

1. 只能从显微镜里看到的；微小的
   a microscopic plant

   一种只能从显微镜里看到的植物

2. 显微镜似的；精微的
   Some insects have microscopic vision.

   一些昆虫有精微的视力。

3. 显微镜的；用显微镜的[B]
   make a microscopic examination

   作一次显微镜检查

adj.

1. so small as to be visible only with a microscope.
   ▸extremely small.
2. relating to a microscope.
3. minutely detailed; thorough.