defend one's title 保住某人的权力
defend one's title
捍卫自己的头衔
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The 23-year-old American is back to defend his title and young enough to one day break Lagat's record of eight victories.
WSJ: Lagat seeks another record at Millrose Games
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