如果你生活在今天，你就不必杞人忧天。
If you live today you might not have to dream about tomorrow.
它只是一个非常非常低活性的问题所以大家不必杞人忧天。
It is only a question of very, very low activities so it is nothing for people to worry about.
它只是一个非常非常低活性的问题所以大家不必杞人忧天。
It is only a question of very, very low activities so it is nothing for people to worry about.
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