Drill machine:
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Sawing
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Floor polisher
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Digging, bulldozer, Construction
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Bobcat loader starts up, shuts down, waits
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Electric surface grinding machine
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Open, close the lid, Tool box
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Cement loading, Construction, end of pouring
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Excavator digs a hole
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Grinder
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Drill machine
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Metal file
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Screwdriver screwing a screw into a tree
★★★★★