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.
志村簇的研究是几何、代数和数论的汇合点。
没有道德的效率是通往失败的道路。
"The heart is a lonely hunter, always searching for something it cannot name."
Tennis is a brutal sport. There is no place to hide out there.