转载自：https://huifangliu.github.io/2018/08/22/%E4%BD%BF%E7%94%A8cd-hit%E5%AF%B9%E8%9B%8B%E7%99%BD%E8%B4%A8%E6%88%96%E6%A0%B8%E9%85%B8%E5%BA%8F%E5%88%97%E8%BF%9B%E8%A1%8C%E8%81%9A%E7%B1%BB/
