【中文版】

口径外汇占款是指金融机构因企业售汇而需要向央行兑换外汇，以及银行因售汇业务而持有的外汇头寸。它是衡量一个国家外汇储备的重要指标，也是反映一个国家经济实力的重要指标。

口径外汇占款的增减可以反映出一个国家经济的强弱。当口径外汇占款增加时，说明这个国家的经济实力在增强，外汇储备在增加，货币汇率也相对稳定；而当口径外汇占款减少时，说明这个国家的经济实力在减弱，外汇储备在减少，货币汇率也相对不稳定。

口径外汇占款的变化还会受到国际政治、经济环境的影响。例如，当一个国家发生战争、政治动荡、经济危机等事件时，该国的口径外汇占款可能会大幅减少，因为这些事件会导致投资者对该国的经济和政治前景失去信心，从而将资金撤出该国。

【英文版】

The term "off-balance-sheet foreign exchange" refers to the foreign exchange holdings of financial institutions required to exchange foreign exchange with the central bank due to corporate foreign exchange sales, as well as the foreign exchange positions held by banks due to their foreign exchange sales business. It is an important indicator to measure a country's foreign exchange reserves and also an important indicator to reflect a country's economic strength.

The increase and decrease of off-balance-sheet foreign exchange can reflect the strength of a country's economy. When the off-balance-sheet foreign exchange increases, it indicates that the country's economic strength is increasing, its foreign exchange reserves are increasing, and its currency exchange rate is relatively stable; when the off-balance-sheet foreign exchange decreases, it indicates that the country's economic strength is decreasing, its foreign exchange reserves are decreasing, and its currency exchange rate is relatively unstable.

The change of off-balance-sheet foreign exchange will also be affected by the international political and economic environment. For example, when a country experiences events such as war, political unrest, economic crisis, etc., the off-balance-sheet foreign exchange of this country may decrease significantly, because these events may cause investors to lose confidence in the economic and political prospects of this country, thereby withdrawing funds from this country.