The dairy industry must balance tradition with progress to meet modern demands.

这个世界是最好的可能世界。

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.

人类活动已成为塑造地球气候的重要力量。

I always try to do something different, something that challenges me.

沙漠教会耐心；河流教会变化。