ex-, 向外。cave, 洞穴。

1. They plan to excavate a large hole.

他们计划挖个大洞.

2. A contractor was hired to drain the reservoir and to excavate soil from one area for replacement with clay.

雇了一个承包商抽干水库的水，挖掉一个区域的泥土后再用黏土填上。

3. They plan to excavate a large hole before putting in the foundations.

他们计划打地基前先挖个大洞.

4. The 2 nd week, driveway fill and level up, but excavate.

第二星期, 马路填平了, 可又挖开了.

5. Fill and level up of the third week of driveway, but excavate.

第三星期马路填平了, 可又挖开了.