the magic sponge

剑桥词典

used humorously to talk about a wet sponge , used during a football game to treat an injured player , that seems to have magical qualities because the player is quickly able to move and play normally again
魔術海緜（戯謔的說法，指足球比賽期間用來治療受傷球員的溼海緜，因爲接受治療的球員似乎都很快就恢複正常了）
He was rolling around in agony , then the physio rubs him with the magic sponge and he's fine ! 他在地上痛苦地滾來滾去，隊毉給他擦了擦魔術海緜，於是他就一點沒事了！ 返回 the magic sponge