What you actually pay for something is at least twice the listed price because of the energy， time， money needed to set it up， learn， maintain， repair， and dispose of at the end. Not all prices appear on labels. Actual costs are 2x listed prices.
释义：阿那克西米尼认为宇宙的变化和诞生都源于气息的变动和演化。
创新不仅仅是技术，而是改变我们的思维和运作方式。
Cryptography is about communication in the presence of adversaries.
A novel is a mirror that reflects not only the world but also the reader's soul.