[牛熊市的界定，小牛，小熊](%E7%89%9B%E7%86%8A%E5%B8%82%E7%9A%84%E7%95%8C%E5%AE%9A%EF%BC%8C%E5%B0%8F%E7%89%9B%EF%BC%8C%E5%B0%8F%E7%86%8A.md)