dredging shovel

例句：

1. 1. The engineer used adredging shovel to clearthe riverbed.
   工程师使用疏浚铲清理河床。
2. 2. The construction crew needed adredging shovel to breakup the frozen ground.
   施工队伍需要一把疏浚铲来打破冻土。
3. 3. Thedredging shovel was essentialfor the project's success.
   疏浚铲对于项目的成功至关重要。