天下之事,其得之不难,则其失之必易。
解析:告诫人们要珍惜所得。
Every barrel we produce must be done responsibly, with full consideration of environmental and social impacts.
Farmers are the original environmentalists; their daily decisions shape our landscapes more than any policy ever could.
计算机图形学的未来在于创造与现实无异的沉浸式体验的能力。
现在不是轻松舒适的`时候.现在是大胆和忍耐的时候。