idealityn.空想性；虚构的事物；想象力idealadj.理想的；完美的；空想的；观念的n.理想；典范；目标ideal textual environment话语环境idealogical and politieal思想政治教育ideal instantaneous orbit理想瞬时轨道ideal and faith education理想信念教育ideal communication system理想通信系统ideal concept of education教育理念ideal incompressible fluid理想不可压缩流体idealweather for a holiday度假的理想天气ideal language environment理想话语环境ideal and moral comparison思想状况比较

1. Raise a number to the power of an exponent.
   使数字自乘为指数的幂。
2. For example, every nonempty finite semigroup is periodic, and has a minimal ideal and at least one idempotent.
   例如，所有非空有限半群是周期性的，并有一个极小理想和至少一个幂等元。