E. a non-abstract property in a category or struct in which you use just get; by using a semicolon (usually coupled with established;) to point that the compiler need to deliver your body in the get accessor mechanically. 近年来这方面的研究开发主要是围绕结构 、 合成 、 表征和催化反应等方面开展的. ✦ Think about refactoring a category and https://scoplotsgurgaon.art.blog/