Sustainability isn't an option—it's a necessity for the future of agriculture.

化学的乐趣在于实践，而不仅仅是发现。

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.

强者的权力除了建立在人民的意见和信仰之上外，别无基础。