reigning world champion

基本解释

In 1996, IBM's Deep Blue became the first machine ever to win even a single game against the reigning world champion, Garry Kasparov.
在1996年，IBM的“深藍”計算機成爲有史以來成爲贏過衛冕世界冠軍卡斯帕羅夫一磐棋的首部計算機。
bbs.chinadaily.com.cn
The reigning world champion Chinese women curlers team beat host Canada 6-5 in overtime at the Winter Olympics Monday, giving Canada its first loss at the tournament after 5 straight wins.
22日，世錦賽冠軍中國女子冰壺隊通過加時侷以6比5戰勝東道主加拿大隊，結束了對手在鼕奧會的5連勝勢頭。
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The reigning world champion completed a 1500m swim in preparation for the London Triathlon later in the summer, and even he found it tough.
衛冕冠軍遊了1500米爲之後在夏天擧行的倫敦鉄人三項賽做準備，連他都覺得悲催。
www.barrichello.com.cn

Driver Steve Holcomb, the reigning world champion, surged to the lead after the first two runs Friday, setting a Whistler Sliding Track record in the process.

Pole sitter and three-time reigning world champion Vettel was third in a Red Bull.
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