We do know, again, Thucydides is our source, that it was customary for colonies to send representatives back to the mother city for the religious observations that were common to them all, so that those create good feelings.

修昔底德的著作里提到,殖民地派遣代表回母邦,参与宗教仪式是他们的习俗,所以这使彼此间有了好感

耶鲁公开课 - 古希腊历史简介课程节选