美债收益率多数下跌，10年期美债收益率跌1.94个基点

Group 1 - The core point of the article is the movement of U.S. Treasury yields, with most yields declining on August 20 [1] Group 2 - The 2-year Treasury yield increased by 0.18 basis points to 3.739% [1] - The 3-year Treasury yield decreased by 0.84 basis points to 3.697% [1] - The 5-year Treasury yield fell by 1.23 basis points to 3.806% [1] - The 10-year Treasury yield dropped by 1.94 basis points to 4.287% [1] - The 30-year Treasury yield decreased by 1.83 basis points to 4.887% [1]