能量守恒定律是经验结果的概括。
拯救犀牛的唯一方法是拯救它所生活的环境,因为它与数百万其他动植物物种之间存在相互依赖关系。
Every design is a rigorous attempt to capture a concrete moment in a continuous process.
"The joy of reading is discovering that you are not alone."