热机的动力与实现它的工质无关;其量仅由最终实现热量转移的物体之间的温度决定。
"Sometimes the smallest things take up the most room in your heart."
A proof is a way to convince yourself and others that something is true.
Writing is a way of preserving the truth.
海洋养育了数百万人,我们的责任是在利用其潜力的同时保护它。
死者并非沉默。他们只是在等待被倾听。
The future of democracy depends on the ability of democratic societies to reform themselves and adapt to new challenges.