卓球のラリー

2人のプレイヤーの間を球が素早く行き来している状態を表現するメタファー

"Engineer's way of creating knowledge" the English version of my book is now available on [Engineer's way of creating knowledge]

(C)NISHIO Hirokazu / Converted from [Scrapbox] at 4/3/2026, 7:58:14 AM[Edit]