日本国债期货扩大跌幅，10年期国债期货下跌0.23至137.75。

Core Viewpoint - Japanese government bond futures have seen an increase in their decline, with the 10-year government bond futures dropping by 0.23 to 137.75 [1] Group 1 - The decline in 10-year government bond futures indicates a potential shift in market sentiment towards Japanese government debt [1]