load_cards方法从磁盘读取文本文件，划分出每个卡片，并将结果赋给 @cards实例变量。
The load_cards method handles reading in the text file from disk, splitting out each card, and assigning the results to the @cards instance variable.
load_cards方法从磁盘读取文本文件，划分出每个卡片，并将结果赋给 @cards实例变量。
The load_cards method handles reading in the text file from disk, splitting out each card, and assigning the results to the @cards instance variable.
应用推荐