volume of excavation

例句：

1. 1. The engineermeasured the volume of the excavation to determine the depth.
   工程师测量了挖掘的体积来确定深度。
2. 2. The construction company is required to maintain a certain volume of excavation for safety reasons.
   出于安全原因，建筑公司被要求保持一定量的挖掘体积。
3. 3. The volume of excavation has been reduced by half compared to last year's work.
   与去年的工作相比，挖掘体积已经减少了一半。