志愿者的负责人陈晓雷说，由于有一些知名度很高的代表参会，今年他们的培训已经得到加强。
Chen Xiaolei, who is in charge of the volunteers, said their training has been stepped up this year due to the presence of several high-profile delegates.
志愿者的负责人陈晓雷说，由于有一些知名度很高的代表参会，今年他们的培训已经得到加强。
Chen Xiaolei, who is in charge of the volunteers, said their training has been stepped up this year due to the presence of several high-profile delegates.
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