circumvallation的翻译，读音
英/ ˌsɜːkəmvəˈleɪʃən /
美/ sɜːrkʌmvæˈleɪʃən /
释义：
n.城墙；围以城墙
例句
The top of circumvallation was paved by quadrel , which looks like a wild street, five to six horses can be ridden abreast along it. 城墙顶上铺着方砖，十分平整，像很宽的马路，五六匹马可以并行。