Mahjong playing is a time-killer amid some Jewish old generation, the same as Chinese.
在老一代的犹太人中，同中国人一样，玩麻将是一种消遣。
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First of all, the cell phones equipped with many entertainments will become a time-killer. Kids will spend their precious time in playing games instead of studying.
Of course, the game wasn't just a time-killer. It was initially intended as a way to teach people basic mouse controls in an era where most computing was text-based.