1. The concept of synchronicity suggests that meaningful coincidences can occur without any discernible causal connection.
同步性的概念表明，有意义的巧合可以在没有可辨认的因果关系的情况下发生。
2. It was a strange synchronicity that I bumped into my old friend while walking down the street.
当我走在街上的时候，碰到老朋友是一种奇怪的巧合。