While designing and taking precautions against the mechanism of the reverse choice, different subjects will take on different roles.
设计防范逆向选择的机制时，不同的主体应承担起不同的角色。
While designing and taking precautions against the mechanism of the reverse choice, different subjects will take on different roles.
设计防范逆向选择的机制时，不同的主体应承担起不同的角色。
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