名词
中文翻译：开放式马具
同义词：
['openbridle', 'open saddle']
例句：
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1. The horse was led into thearena by an experienced trainer.
经验丰富的训练师牵着马进入了竞技场。
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2. Theopen harness allows for morefreedom of movement for the rider.
开放式马具让骑手有更多的活动自由。
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3. The open harness is a popularchoice for equestrian events.
开放式马具是马术比赛的热门选择。