He is a skilled card player who often joins high-stakes poker games.

card 的意思是"纸牌"，指扑克牌等游戏用的卡片。 player 的意思是"玩家、参与者"，指参与游戏或比赛的人。 card player 指"玩纸牌游戏的人"，特别是指擅长玩扑克等纸牌游戏的玩家。