免费的疫苗比昂贵的治疗更有价值，但更难推广。

"The most important thing is to stay humble."

Sustainability isn't just a buzzword—it's the foundation of responsible forestry.

材料的质量反映了品质的质量。

即使在最黑暗的时刻，只要记得点亮灯光，就能找到幸福。