arch bar

例句：

1. 1. The old building has a beautiful arched window in the center.
   这座老建筑有一个漂亮的拱形窗户在中心。
2. 2.The arched roof of the cathedral is visible from the street.
   大教堂的拱形屋顶从街上可见。
3. 3.She leaned on the arched door and stepped inside.
   她靠在拱形门上，走进去。