The development of financial technology requires strengthened international cooperation to jointly address cross-border risks.

The propensity to truck， barter， and exchange one thing for another is common to all men， and to be found in no other race of animals.

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。