From building skyscrapers to loading freight trains, from tearing down old houses to mining fuel, heavy equipment is everywhere! Children will enjoy taking a close-up look at these important machines, including terrific tractors, bucket wheel excavators, and even a super space shuttle crawler—the largest self-powered tracked vehicle in the world. Great-looking and large shots showcase extra-big tires, a tractor’s advanced hydraulic system, a control stick for steering, a bulldozer blade, and the long, wide tracks of a crawler crane. And kids will really dig into fascinating facts and information on heavy machine achievements such as building the Chunnel, the longest tunnel on earth.
还没人写过短评呢