循环
近义词与同义词
按词义分组列出，使用时请结合具体语境。
cause to go through a recurring sequence; "cycle the laundry in this washing program"
recur in repeating sequences
move through a space, circuit or system, returning to the starting point; "Blood circulates in my veins"; "The air here does not circulate"
movement through a circuit; especially the movement of blood through the heart and blood vessels