一个中国官员代表团参加了国际会议。

A ___delegation of Chinese officials attended the international conference.

他被指派陪同欧盟代表团访问基辅。

He was assigned to accompany a ___delegation from the European Union during their visit to Kyiv.

联合国派遣了一个代表团去调解和平谈判。

The United Nations sent a ___delegation to mediate the peace talks.