物理学和数学之间的界限并不像人们想象的那么清晰。
The best leaders are those who listen more than they speak.
解释:两虎相斗而劣狗趁机得到好处。
The best fertilizer is the farmer's shadow.
勇气是生命为给予平静所要求的代价。
The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.