美国2月S&P/CS20座大城市未季调房价指数年率 4.5%，预期4.7%，前值4.67%。

Group 1 - The core point of the article indicates that the year-over-year S&P/CS 20-City Composite Home Price Index in the U.S. for February is 4.5%, which is below the expected 4.7% and the previous value of 4.67% [1]