黄金为什么下跌？这个问题涉及到多种因素，包括经济数据、货币政策、市场情绪和地缘政治风险等。以下是对这个问题的解析以及英文翻译对照：

首先，黄金下跌可能是由于全球经济和金融市场的不确定性增加。当全球经济增长放缓、贸易紧张局势加剧或者地缘政治风险上升时，投资者可能会寻求将资金投入黄金市场，以规避其他资产的风险。然而，当这些因素没有得到有效的缓解或者出现进一步恶化时，投资者可能会对黄金失去信心，导致黄金价格下跌。英文翻译为：Firstly, gold prices may fall due to increasing global economic and financial market uncertainties. When the global economy slows down, trade tensions escalate, or geopolitical risks rise, investors may seek to invest their funds in the gold market to avoid risks in other assets. However, when these factors are not effectively resolved or further deteriorate, investors may lose faith in gold, leading to a drop in gold prices.

其次，黄金下跌还受到货币政策和利率的影响。当货币政策宽松、利率下降时，投资黄金的机会成本相对降低，从而对黄金价格构成一定支撑。然而，当货币政策收紧、利率上升时，投资黄金的成本也会随之增加，导致黄金价格下跌。英文翻译为：Secondly, gold prices are also influenced by monetary policy and interest rates. When monetary policy is loose and interest rates fall, the opportunity cost of investing in gold is relatively low, thereby supporting the gold price. However, when monetary policy tightens and interest rates rise, the cost of investing in gold also increases, leading to a drop in gold prices.

此外，黄金下跌还受到市场供求关系的影响。当市场上的黄金供应量大于需求量时，黄金价格可能会下跌。反之，当市场上的黄金需求量大于供应量时，黄金价格可能会上涨。英文翻译为：In addition, gold prices are also influenced by market supply and demand. When the supply of gold on the market exceeds demand, the price of gold may fall. Conversely, when the demand for gold on the market exceeds supply, the price of gold may rise.