Complex sentence: Sierpiński curves are a recursively defined sequence of continuous closed plane fractal curves, that in the limit n\\ rightarrow\\ infty completely fill the unit square; therefore the Sierpiński curve is another famous example of a space-filling curve.
Split into simpler sentences: Sierpiński curves are a recursively defined sequence of continuous closed plane fractal curves, that in the limit n\\ rightarrow\\ infty completely fill the unit square. The Sierpiński curve is another famous example of a space-filling curve.