推土机 Bulldozer
（重定向自Crawler dozer）
推土机是一种工程车辆，前方装有大型的金属推土刀，使用时放下推土刀，向前铲削并推送泥、沙及石块等，推土刀位置和角度可以调整，以适应铲土、填土等工作，亦可用以清除障碍物。
Crawler dozer
中文百科
英语百科
Bulldozer 推土机
（重定向自Crawler dozer）
A bulldozer is a crawler (continuous tracked tractor) equipped with a substantial metal plate (known as a blade) used to push large quantities of soil, sand, rubble, or other such material during construction or conversion work and typically equipped at the rear with a claw-like device (known as a ripper) to loosen densely compacted materials.
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