此次活动只针对美国和加拿大的聚会组织者和参与者。

Offer is only extended to hosts and attendees of launch parties in the USA and Canada.

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集体行动能不能实现，除了要考虑组织者和参与者的个体理性约束以外，还必须考虑组织者和参与者的公平相容约束。

Whether a collective action can be realized depends not only on the organizer and followers individual rationality constraints, but also on their fairness-compatible constraints.

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老师的角色从权威变成了控制者，评价者，组织者，提示者，参与者，资源提供者和引导者。

Teachers role is changed from an authority to a controller, an assessor, an organizer, a prompter, a participant, a resource-provider and a facilitator.

youdao

老师的角色从权威变成了控制者，评价者，组织者，提示者，参与者，资源提供者和引导者。

Teachers role is changed from an authority to a controller, an assessor, an organizer, a prompter, a participant, a resource-provider and a facilitator.

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