If you own the class, you can remove the constraint or else do something to enable an implicit reference or identity conversion.
如果您拥有类，则可移除约束或执行某一操作以启用隐式引用或标识转换。
Focusing on the "Farmer-Citizenization" problem, this paper analyzes factors of barriers to farmer's identity conversion and puts out the corresponding methodologies.
本文针对农民的市民化问题，分析了阻碍农民身份转换的因素，提出促进农民身份转变的办法和措施。
Focusing on the "Farmer-Citizenization" problem, this paper analyzes factors of barriers to farmer's identity conversion and puts out the corresponding methodologies.
本文针对农民的市民化问题，分析了阻碍农民身份转换的因素，提出促进农民身份转变的办法和措施。
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