a line of people who are all walking or travelling in the same direction, especially in a formal way as part of a religious ceremony or public celebration

a wedding/funeral procession 婚礼／葬礼的行列

The festival will open with a procession led by the mayor. 艺术节将由市长带领的一支队伍揭开序幕。

a series of people or things, one after the other

My day has just been a never-ending procession of visitors. 我今天一整天来访的客人络绎不绝。