本报讯，近日，四川凉山、河北河间、甘肃定西等地公布了治理天价彩礼的阶段性成果。
13日发布的今年中央一号文件明确提出，扎实开展高价彩礼、大操大办等重点领域突出问题专项治理。
I have various ObservableC开发者_高级运维ollections of different object types.I\'d like to write a single method that will take a collection of any of these object types and return a new collection wh
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