1. The doorway to the castle was adorned with a beautiful stone arch. - 城堡的门口装饰着一个漂亮的石拱门。
2. The architect designed a stunning arch bridge that spanned the river. - 建筑师设计了一座横跨河流的令人惊叹的拱桥。
3. The cat arched its back in a defensive stance. - 猫弓着背处于防御姿势。
4. The old church had a series of pointed arches along its walls. - 老教堂的墙上有一系列尖拱。
5. The gymnast gracefully arched her body as she performed on the balance beam. - 体操运动员在平衡木上表演时优雅地弯曲身体。
6. The rainbow arched across the sky, creating a beautiful and colorful display. - 彩虹跨越天空，形成美丽多彩的景象。