Rocket stage y Imprenta de Gutenberg: qué tienen en común

1. Paso 1. Rocket stage — forma parte de — Cohete multietapa. Each stage is tanks and an engine, dropped once spent.
2. Paso 2. Cohete multietapa — es un tipo de — Cohete. A multistage rocket is a rocket that drops its empty tanks on the way.
3. Paso 3. Cohete — está hecho de — Papel. The first rockets were paper tubes filled with gunpowder.
4. Paso 4. Papel — se utiliza en — Imprenta de Gutenberg. The impression is made on paper.

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