名词 earthwork:

1. an earthen rampart

Earthiann.地球人earthn.地球；泥土；世间earthed insulation instrument接地绝缘仪Earth moves around the sun.地球绕着太阳转earth-equivalent of gravity地球重力当量earth leakage circuit breaker漏电保护断路器earth station equipment noise地球站设备噪声earth- ionosphere waveguide地电离层波导earth surface water resources地表水资源earth rotation synthesis array地球自转综合天线阵earth system dynamic evolution历史地球系统动力学earth failing to control water土不制水