为什么白银黄金是货币？

中文段落：

白银和黄金作为货币有着悠久的历史。它们之所以被广泛接受作为货币，主要是因为它们具有稀缺性、持久性和普遍接受性等特点。

首先，白银和黄金的稀缺性使它们具有很高的价值。这两种金属在自然界中的储量有限，不易被大量开采，因此它们的价值得到了保障。人们普遍认为，稀缺的资源更有可能保持其价值，甚至随时间推移而增值。

其次，白银和黄金具有极佳的持久性。它们不易受到腐蚀和损坏，可以长时间保存而不失去其原有的价值。这使得它们成为长期储存价值的理想选择。

最后，白银和黄金的普遍接受性也是它们成为货币的重要原因。在全球范围内，人们普遍认可白银和黄金的价值，这使得它们可以在不同地区和国家之间进行交易，成为一种国际性的货币。

综上所述，由于白银和黄金的稀缺性、持久性和普遍接受性，它们成为了理想的货币形式。在历史长河中，它们一直是全球经济体系中的重要组成部分，对世界经济产生了深远的影响。

**英文段落：

Why Silver and Gold Are Currency?

Silver and gold have a long history as currencies. Their widespread acceptance as a medium of exchange is primarily due to their scarcity, durability, and universal acceptability.

Firstly, the scarcity of silver and gold赋予 them high value. The limited reserves of these metals in nature and their difficulty in large-scale extraction ensure their value. There is a widespread belief that scarce resources are more likely to maintain their value, even appreciate over time.

Secondly, silver and gold possess excellent durability. They are resistant to corrosion and damage, retaining their original value for long periods. This makes them ideal for storing value over the long term.

Lastly, the universal acceptability of silver and gold is another crucial reason for their currency status. Globally, people recognize the value of silver and gold, allowing them to be traded across different regions and countries as an international currency.

In conclusion, silver and gold's scarcity, durability, and universal acceptability have made them ideal forms of currency. Throughout history, they have been integral components of the global economic system, exerting profound influence on the world economy.