部分的回答正在改变我们现在的志愿服务项目。
Part of the answer is changing views of existing volunteer programs.
志愿者被要求给一项假定的公共服务项目估价，研究人员则通过脑部扫描来确定志愿者是否在说谎。
The scans helped the researchers determine whether or not the participants were lying when they said how much they valued a hypothetical service.
行政人员届时将视察展示厅、确认安保和志愿者工作安排、检视服务项目和后勤工作。
Officials will be testing exhibition pavilions, security and volunteer arrangements, visitor services and logistics.
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