美元加息加的是联邦基金利率，即美国同业拆借市场的利率。它是美国最重要的基准利率之一，对美国乃至全球经济都具有重要影响。

中文：

美元加息加的主要是联邦基金利率，也就是美国同业拆借市场的利率。联邦基金利率是指银行间隔夜拆借利率，是银行间短期资金借贷的参考利率。通过调整联邦基金利率，美联储可以影响商业银行的贷款利率，进而影响整个经济体系的借贷成本和资金流向。联邦基金利率的调整通常会对股票市场、房地产市场、汇率等产生重要影响。因此，美联储的加息政策通常会受到全球市场的关注。

英文：

The interest rate that the US dollar raises is the federal funds rate, which is the interest rate of the US interbank lending market. The federal funds rate refers to the overnight interbank lending rate, which is the reference rate for short-term interbank lending. By adjusting the federal funds rate, the Federal Reserve can influence the loan interest rates of commercial banks, and thus influence the borrowing costs and capital flows of the entire economic system. The adjustment of the federal funds rate usually has important impacts on stock markets, real estate markets, exchange rates, and other areas. Therefore, the Fed's interest rate hike policy is usually closely watched by global markets.