周而复始 Cycle ; Full Circle ; go round and round

他周而复始 It goes full circle

周而复始的 Back and forth

周而复始的经济 The Circular Flow

它们周而复始 They Turn and Turn around

它周而复始 It goes full circle

周而复始的前行 Moving forward in cycles

生活周而复始 Ah la la la la la la life goes full circle