铁人三项运动(triathlon)是体育运动项目之一，属于新兴综合性运动竞赛项目。比赛由天然水域游泳、公路自行车、公路长跑三项目按顺序组成，运动员需要一鼓作气赛完全程。2000年成为奥运会项目，2006年成为亚运会项目。
相关网络词汇整理：
Triathlon 铁人三项 ; 铁人三项运动 ; 铁人三项游泳 ; 三项铁人
man triathlon 铁人三项
triathlon- 铁人三项
Indoor Triathlon 室内铁人三项
Ironman Triathlon 铁人三项赛
Triathlon Training 铁人三项训练
Winter Triathlon 冬季铁人三项
Triathlon Venue 铁人三项赛场 ; 北京奥运场馆铁人三项赛场
Triathlon in Seoul 铁人三项
IRON-MAN TRIATHLON 铁人三项
双语例句：
At its core triathlon is as much a mental challenge as a physical one and this may be one reason for its growing popularity at boardroom level.
就其本质而言，铁人三项不仅是身体上的挑战，也是精神上的挑战，这也许是它在高层人士中日益流行的原因之一。
The first triathlon was held in the south-western United States city of San Diego in 1974, in many ways an outgrowth of the California jogging craze.
第一次铁人三项赛在美国西南部的圣地亚哥举行，时间是1974年。 比赛很大程度上源于加利福尼亚人对慢跑的狂热。
Add to this outlay a commitment of at least five or six hours a week for training in the pool, on the bike or running and triathlon begins to look like a way of life rather than just a sport.
除了这些费用之外，还要保证每周至少在泳池里、自行车上或跑步方面训练五、六个小时。 铁人三项开始像一种生活方式，而不仅仅是一项运动了。
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