1 sentence for 毛 (máo — crude)

1. 他看着显微镜下的毛刺，看到小钩子，并受到启发。

   tā kàn zhe xiǎn​wēi​jìng xià de máo​cì, kàn dào xiǎo gōu​zi, bìng shòu dào qǐ​fā.

   He looked at the burrs under a microscope and saw tiny hooks, and was inspired.

   Source: CCMatrix