E. a non-summary property in a category or struct in which you use just get; with a semicolon (frequently combined with set;) to point that the compiler really should create the body on the get accessor routinely. 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. NerdWallet's written content is simple fact-checked for accuracy, https://highriseapartmentingurgaon.blogspot.com