Stray birds of summer come to my window to sing and fly away。 And yellow leaves of autumn， which have no songs， flutter and fall there with a sigh。

译文：今年春天眼看又要过去了，不知什么时候才是我回家的日子。

The simplest solutions are often the most elegant.

跨行业合作是解决海洋保护复杂挑战的关键。