The best things in life are free, like smiles, love and good memories.

生活中最美好的东西都是免费的，比如微笑、爱和美好的回忆。

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Some of the best things in life are free.

生命中最好的一些事是免费的(Some of the best things in life are free)。

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They say the best things in life are free.

有人说生命中最好的事情是自由。

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The best things, as they say, "Best things in life are free" and it really is true that, you know,

最好的东西，人们说“生命中最好的东西是免费的”，这是真的。

钱重要吗？ - SpeakingMax英语口语达人