Two basic approaches to spanning over masonry walls are post-and-lintel construction and arch, vault, and dome construction.
- span [spæn] v. (桥、拱等)横跨
- post-and-lintel [pəust - ænd - ˈlintl] n. 连梁柱
- arch [ɑ:tʃ] n. 拱(连柱的)
- vault [vɔ:lt] n. 拱(不连柱的)
- dome [dəum] n. 穹隆(结构)：类似于穹隆(弓形、有拱的)或圆屋顶的结构
