生活就像一架钢琴

Life is like a piano:

white keys are happy moments and black keys are sad moments.

But remember both keys are played together to give sweet music.

生活就像一架钢琴：白键是快乐，黑键是悲伤。但是，要记住只有黑白键的合奏才能弹出美妙的音乐。