a loosecard

例句：

1. 1. She used to play cardswith her friends at the park.
   她以前在公园和朋友们玩牌。
2. 2. The cardgame is a popular pastime for manypeople.
   这种卡牌游戏是许多人的热门消遣。
3. 3. He was playing a loosecard whenhe accidentally revealed his hand.
   他正在玩一张松卡时不小心透露了自己的手牌。