人为某样东西实际支付的成本至少是标价的两倍，因为买来后设置、学习、维护、修理，以及最后处置，也需要耗费精力、时间和钱。不是所有的实际成本都在价签上。实际成本是标价的2倍。
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.
The strength of liberal democracy lies in its ability to adapt and reform itself.
秋天已经结束，白昼仍然漫长，王粲（字仲宣）怀念远方的心情更加凄凉
I want to make music that will last forever.