長期利率一度升至2.275%，創下自1999年2月以來，約27年新高水準。

在19日的債券市場上，作為長期利率代表性指標的10年期國債殖利率大幅上漲，一度達到2.275%，創下自1999年2月以來，約27年零8個月*的新高水準。 *Note: The original Japanese text says "およそ27年ぶり" (approximately 27 years). Calculating from February 1999 to October 2024 (assuming the news is current), it is 25 years and 8 months. However, since the source text explicitly states "およそ27年ぶり" (approximately 27 years), I will use the precise calculation for accuracy in the Chinese translation, or stick to the approximation if the context demands brevity. Given the need for accuracy, I will use the calculation based on the typical reporting date of such news (October 2024), or simply state "約27年ぶり" as the source does.* *Self-Correction/Refinement:* The source text says "1999年2月以来およそ27年ぶり" (since February 1999, approximately 27 years). 1999 to 2024 is 25 years. There might be a typo in the original Japanese source (perhaps they meant 1997 or 1996, or perhaps the date of the news is much later than assumed). As a professional translator, I must translate *exactly* what is written, even if the math seems slightly off. *Final Translation based strictly on the source:* 在19日的債券市場上，作為長期利率代表性指標的10年期國債殖利率大幅上漲，一度達到2.275%，創下自1999年2月以來，約27年來的新高水準。