Collaboration across industries and borders is essential if we want to address the global challenges of food security.

If I should tell you，I still read the fairy tale，and they are my favorite books。

可能近似正确（PAC）学习的概念在计算学习理论中具有基础性意义。

"The future is always a whirring blur, a possibility, not a place."

每一块石头，每一棵树，每一条河流都有一个故事要讲。