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.
科幻小说是我们时代的现实主义。
通信技术的创新应聚焦于解决现实问题。
投资成功的制胜法宝是通过指数基金拥有整个股票市场，然后什么都不做。只要坚持到底。
The key to innovation is fostering a culture of curiosity and experimentation.