可持续林业不是一种选择;它是一种义务。
数学不仅仅是关于数字、方程、计算或算法,而是关于理解。
You want to be the pebble in the pond that creates the ripple for change.
The only person you should try to be better than is the person you were yesterday.
Better never means better for everyone... It always means worse, for some.
The laws of physics are not just rules, they are the language of the universe.