差不多要在同时使挖泥机，驳船和索斗铲各就各位。
We should have the dredge, barges and draglines in place about the same time.
土方发掘可用任何发掘机举行，如单斗发掘机、拉铲发掘机、蛤壳式挖泥机、起重机和铲运机等。
Excavation may be done by any of several excavators, such as shovels, draglines, clamshells, cranes, and scrapers.
土方发掘可用任何发掘机举行，如单斗发掘机、拉铲发掘机、蛤壳式挖泥机、起重机和铲运机等。
Excavation may be done by any of several excavators, such as shovels, draglines, clamshells, cranes, and scrapers.
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