写一封电子邮件回答国际学生志愿者的询问，详细说明项目的细节。
Write an email to answer the inquiry from an international student volunteer, specifying the details of the project.
给他/她写一封电子邮件提出一些建议。
写一封电子邮件邀请国际学生杰克来参加，并告知他具体细节。
Write an email to Jack, an international student, to invite him to participate, and tell him the details.
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