Innovation is not about inventing something entirely new, but about improving what already exists.
单一货币的最大优势在于消除了汇率波动并降低了交易成本,从而促进了贸易和投资。
行人似乎永远没有意识到他们对于汽车的安全而言是一种威胁。
In every character, there is a truth waiting to be discovered.