2016年5月30日：为什么美元不能用

中文段落：

2016年5月30日，美元不能用的说法并非指美元失去了其货币功能，而是指在某些特定情境或地区，美元的使用受到限制或禁止。这种情况通常与国家的经济政策、金融稳定、外汇管理等因素密切相关。

首先，一些国家可能为了维护本国货币的稳定和汇率的平衡，会限制或禁止美元在本国的流通。这通常发生在那些经济相对封闭或金融体系较为脆弱的国家。通过限制美元的使用，这些国家可以减少外汇市场的波动，降低外部经济冲击对本国经济的影响。

其次，某些地区可能存在政治或安全方面的考虑，导致美元的使用受到限制。例如，在某些冲突地区或受到国际制裁的国家，使用美元可能会受到严格限制，以避免资金流入非法渠道或支持恐怖主义活动。

此外，全球金融市场的波动和不确定性也可能导致某些时候美元的使用受到限制。在金融危机或市场动荡时期，投资者可能会失去对美元的信心，转而寻求其他避险资产。这种情况下，各国可能会采取措施限制美元的流动，以维护本国金融市场的稳定。

英文段落：

On May 30, 2016, the statement that the US dollar cannot be used did not refer to the loss of its currency function but rather to restrictions or bans on its use in certain specific situations or regions. Such situations are typically closely related to national economic policies, financial stability, and foreign exchange management.

Firstly, some countries may restrict or prohibit the circulation of the US dollar in their country to maintain the stability of their domestic currency and the balance of exchange rates. This usually occurs in countries with relatively closed economies or fragile financial systems. By limiting the use of the US dollar, these countries can reduce fluctuations in the foreign exchange market and mitigate the impact of external economic shocks on their domestic economy.

Secondly, there may be political or security considerations in certain regions that lead to restrictions on the use of the US dollar. For example, in conflict zones or countries subject to international sanctions, the use of the US dollar may be strictly limited to avoid the flow of funds into illegal channels or to support terrorist activities.

Moreover, fluctuations and uncertainties in global financial markets may also lead to restrictions on the use of the US dollar at certain times. During financial crises or market turmoil, investors may lose confidence in the US dollar and seek other safe-haven assets. In such situations, countries may take measures to restrict the flow of the US dollar to maintain the stability of their domestic financial markets.