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Try to catch a fly and you will find out just how fast it can move.
With the huge compound eyes that are made up of hundreds of separate eyelets, the fly see your hand coming.
With a buzz of fast beating wings, it is gone before you can touch it.
Although only the size of an adult's fingernail, the fly is an amazingly complicated animal.
It's body is made up of three sections. The head contains the eyes and mouth. The mid-section,
or thorax, has three pairs of many-jointed legs and a pair of wings. A hind section, the abdomen,
holds all the other body organs. Most of the body is covered in tiny hairs that let the fly detect
pressure and vibrations. There is no skeleton inside ta fly. Instead, the outer skin of the body,
called the cuticle, is stiff and shell-like and forms a type of outer skeleton, or exoskeleton.
This robot fly is built in a similar way with a rigid casing on each of its sections.
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