My Memory through a Dictionary

"To bring ping-pong balls back to like that have been dented, just place them in hot water for 15-20 minutes."

☆This sentence reminded me of my elementary school days when we enjoyed playing ping-pong in the noon recesses, after school hours, and even during between-classes recesses. We sometimes stepped on the balls by accident and dented them. When that happened, our seniors said such words as cited above. A nostalgic memory.