noun 下载 🔗分享 拱腹, 拱intérieur. The inner curve of an arch or vault. Examples : "The artist carefully painted a mural on the intrados of the bridge's arch. " 艺术家小心地在桥拱的拱腹上画了一幅壁画。 architecture building part 与AI对话词汇游戏阅读练习