名词
中文翻译：骑手
同义词：
['horseback rider', 'horseman']
例句：
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1. The rider rode the horse to the top of the mountain.
骑手骑着马登上了山顶。
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2. The rider was riding a horse when it suddenly reared up.
骑手正骑马时，马突然站了起来。
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3. The rider dismounted and walked back down the trail.
骑手下了马，沿着小径走回来。