Machinery puts concrete<br>The construction site is very noisy<br>builders discuss the project<br>excavator puts sand in the back of a truck or dump truck<br>by the way, dump trucks take out all the construction debris from the construction site, and the excavator can dig and level the ground<br>construction crane with a hook and a bucket<br>one builder carries a wheelbarrow with wreckage<br>they're holding a drawing
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