名词
中文翻译：鞍形拱
同义词：
['horseback arch', 'saddle horn']
例句：
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1. The horse was ridden across thefield with a saddle arch in its back.
这匹马被骑在背上，鞍背处有一个鞍形拱。
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2. The ridersat comfortably on the saddle arch, enjoyingthe breeze.
骑手坐在鞍形拱上，享受着微风。
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3. The stablemaster carefully checked the saddle arch to ensureit was secure.
马厩主人仔细检查鞍形拱，确保它固定牢靠。