fellow traveler

Although he never officially joined the party, he was known as a fellow traveler of the movement.

虽然他从未正式加入该党，但他被认为是该运动的同路人。

Many fellow travelers attended the rally to show their solidarity with the cause.

许多同路人参加了集会，以表示对该事业的支持。

She was a fellow traveler of the socialist ideology, often speaking at their events.

她是社会主义意识形态的同路人，经常在他们的活动中发言。