人= ??????
人=吃饭+睡觉+上班+玩,
猪=吃饭+ 睡觉,
代入:人=猪+上班+玩,
即:人-玩=猪+上班.
结论: 不懂玩的人=会上班的猪.
snowboy128 发表评论于
all of the books are free download, maybe the website sets download limit per day. good luck!
snowboy128 发表评论于
all of the books is free download. if which you couldn't download, try next day, I think they set download limit per day. good luck.
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