美国国债收益率在美联储主席鲍威尔重申将对利率保持耐心的立场后，略微收窄涨幅。

Core Viewpoint - US Treasury yields slightly narrowed their gains after Federal Reserve Chairman Jerome Powell reiterated a patient stance on interest rates [1] Group 1 - The statement from the Federal Reserve Chairman indicates a commitment to maintaining current interest rates for the foreseeable future [1] - The market's reaction to the Fed's stance reflects investor sentiment regarding future economic conditions and monetary policy [1]