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footprints
record of page visitors (e.g. in social networking sites)
雪の上に動物の足跡が残っていた。
Animal footprints were left on the snow.
犯人の足跡を追って捜査が進んだ。
The investigation progressed by following the criminal's footprints.
砂浜に自分の足跡がずっと続いていた。
My footprints continued along the beach.