macbook换头像（macbook头像怎么自定义）

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 Life is sad at times, but it is up to you to make your own life happy. 生活有时是令人沮丧的，但你可以努力让自己的过得开心。

 Life is like live telecast of a TV event. There is no 'rehearsal'. Hence we must strive to do the best we can in everything! 人生没有彩排，只有现场直播，所以每一件事都要努力做得最好!

 Life is full of trial and error. One failure doesn't mean you're out of the picture. 人生充满了尝试与错误。一次失败不代表你就出局了。