日本引發拋售潮後，美國國債加入全球債券跌勢

公債價格下跌 (or 債券價格下跌). * "pushing yields to the highest in more than four months": 將殖利率推升至四個多月以來的新高。 * "as a fierce selloff in Japanese bonds": 因日本債券的劇烈拋售 (或 猛烈拋售). * "spilled over into global debt markets": 蔓延至全球債務市場 (或 溢出至全球債市). 3. **Synthesize and Refine the Chinese Sentence (Draft 1):** 公債價格下跌，將殖利率推升至四個多月以來的新高，因為日本債券的猛烈拋售蔓延到了全球債務市場。 4. **Review for Professional Tone (Refinement):** * "Treasuries" usually refers specifically to US government bonds, but in a global context, "債券" (bonds) or "公債" (government bonds) is fine. Since the context is global spillover, "公債價格" (bond prices) is appropriate. * "Fierce selloff" translates well as "猛烈拋售" or "劇烈拋售". * "Spilled over" is best translated as "蔓延" (màn yán - spread) or "溢出" (yì chū - spill over). "蔓延" is often used in financial contagion. 5. **Final Translation:** 公債價格下跌，將殖利率推升至四個多月以來的新高，原因是日本債券的猛烈拋售蔓延至全球債務市場。 (This is concise and professional.) (Using "殖利率" for "yields" and "公債" for "Treasuries" ensures accuracy.) (Using "債務市場" or "債市" for "debt markets" is standard.) (Using "蔓延" for "spilled over" is strong.) 6. **Final Output Generation.** (Ensure only the translation is outputted.) (Self-Correction: Using "公債" covers the general meaning of Treasuries in this context.)公債價格下跌，將殖利率推升至四個多月以來的新高，原因是日本債券的猛烈拋售蔓延至全球債務市場。