to go upstream; to go up; go upstream; to go up; to go back ; to date back ; to trace back ; to be retroactive; go back ; to date back ; to trace back ; to be retroactive
遡る
to go upstream; go upstream; to go back; go back; to date back to; date back to; to trace back to; trace back to; to make retroactive; make retroactive; to go upstream; to go up; go upstream; to go up; to go back ; to date back ; to trace back ; to be retroactive; go back ; to date back ; to trace back ; to be retroactive
溯る
to go upstream; to go up; go upstream; to go up; to go back ; to date back ; to trace back ; to be retroactive; go back ; to date back ; to trace back ; to be retroactive
泝る
to go upstream; to go up; go upstream; to go up; to go back ; to date back ; to trace back ; to be retroactive; go back ; to date back ; to trace back ; to be retroactive
