And if you blow that up, and zoom in 900 times, you see there are hairs there, tiny hairs. And if you look carefully, those tiny hairs have striations. And if you zoom in on those 30,000 times, you'll see each hair has split ends.
如果你再放大900倍 你看到有毛，细小的毛，再看仔细些 这些毛上又有条纹。如果你再把它们都放大三万倍 你看到每一根细毛头上都有分叉