steam shovel
常考释义
1.（蒸汽）挖土机，挖掘机a large machine for digging, that originally worked by steam
Outfitted with piston-driven jaws and steam-shovel arms, his machines exude biological vibes .
他设计的机器人装备着活塞驱动的下颚和蒸气铲车那样的胳膊，浑身洋溢着活力。
The workmen excavated dirt and rocks with a steam shovel.
工人以蒸汽铲掘土和石头。
1839 - William Otis receives a patent for the steam shovel.
1839年的今天，威廉·奥蒂斯收到了蒸汽铲的专利权。
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