The bulldozer starts, leaves:
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Reverb sawing, Hacksaw
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Bobcat loader, drive away, start up
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Leaves, The bulldozer starts
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Driving piles, Construction of buildings
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Blows on concrete, Hammer and chisel
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Vibratory grinding machine
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Electric polished marble
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Grinder
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Plane
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Excavator, engine noise
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Excavator starts up, expects to be jammed
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Belt sander
★★★★★