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to mask; to cover; to cloak; to hide; to conceal
化粧で傷を覆い隠す。
She covers the scar with makeup.
厚い雲が夜空の月を覆い隠した。
Thick clouds covered the moon in the night sky.
その会社は多額の損失を覆い隠して、虚偽の報告をした。
The company concealed its significant losses and made a false report.