名词
中文翻译：推土机
同义词：
['excavator', 'bulldozer']
例句：
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1.The construction crew used a large excavator to clear the path for the new road.
建筑工人使用一台大型挖掘机为新路开辟了道路。
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2. The bulldozer was used to level the ground before the new building was constructed.
在新建大楼之前，这台推土机被用来平整土地。
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3.The excavator was used to dig a deep hole for the foundation of the new bridge.
这台挖掘机被用来挖一个深洞作为新桥的基础。