黄金为什么大涨？这个问题涉及到多种因素，下面我们来一一解析。

首先，黄金价格的上涨可能是由于市场供求关系的变化。如果黄金供应短缺，而需求增加，那么价格就会上涨。这是因为供应不足，而需求增加，导致供不应求，从而推动了价格的上升。英文翻译为: Why has gold risen? This question involves many complex factors. Let's analyze them one by one.

Firstly, the rise in gold prices may be due to changes in market supply and demand. If there is a shortage of gold supply and an increase in demand, the price will rise. This is because there is insufficient supply and increased demand, resulting in a situation of undersupply, which drives up prices.

其次，全球经济形势也是影响黄金价格的重要因素之一。如果全球经济表现不佳，比如经济增长放缓或出现衰退的迹象，那么对黄金的需求可能会增加，从而导致黄金价格的上涨。英文翻译为: The global economic situation is also an important factor affecting gold prices. If the global economy performs poorly, such as experiencing slowdown or signs of a recession, the demand for gold may increase, leading to a rise in gold prices.

最后，政治因素和地缘政治风险也可能影响黄金价格。比如，战争、政治动荡或制裁等不利事件发生时，黄金的供应链可能会受到影响，导致供应中断或不确定性增加，从而引发黄金价格的波动。英文翻译为: Political factors and geopolitical risks may also affect gold prices. For example, when adverse events such as war, political unrest, or sanctions occur, the supply chain for gold may be affected, leading to supply disruptions or increased uncertainty, which can cause fluctuations in gold prices.