您要查找的是不是：
- Stable homotopy groups of spheres 球面稳定同伦群
- stable homotopy group 稳定同伦群
- stable homotopy group of sphere 球面稳定同伦群
- stable homotopy groups 稳定同伦群
- Homotopy Group in Fuzzy Topological space 不分明拓扑空间的同伦群
- Some acquaintance with manifolds, simplicial complexes, singular homology and cohomology, and homotopy groups is helpful, but not really necessary. 再比如渔人从桃花源出来的时候，桃花源的人送给他一包礼物里面有种子和一只拨浪鼓。
- The evils ensue from lack of a stable government. 这些弊病是由于缺乏一个稳定的政府而引起的。
- Education should not be restricted to any one specific age group. 教育不应限制在任何特定的年龄组上。
- The horse in the stable has broken out. 马厩里的那匹马跑了。
- He broke away from that lawless group years ago. 他在几年前脱离了那个非法团体。
- The group of barbaric soldiers killed many people. 那群野蛮的士兵杀了很多人。
- He is a man of stable character. 他是一个稳重可靠的人。
- The group was made up of doctors. 这个团体是由医生组成的。
- The black horse is one of Mr. King's stable. 那匹黑马是金先生的赛马之一。
- That country is politically stable. 该国政治上稳定。
- He has a whole stable of informers working for him. 他有一群告密者为他效劳。
- A group of boys dashed out of the classroom. 一群男孩子从教室里冲出来。
- There were six stalls for horses in the stable. 马厩里有六个栏。
- I come upon a group of children play in the street. 我遇到一群孩子在街上玩耍。
- He goes about with a group of nice boys. 他经常和一群好孩子在一起玩。
