Planetarium e multistage rocket: o que têm em comum

1. Passo 1. Planetarium — é feito de — Concreto. Zeiss’s first dome was thin concrete.
2. Passo 2. Concreto — é material para — Launch complex. The launch table is concrete.
3. Passo 3. Launch complex — utiliza — Rocket. Launching rockets.
4. Passo 4. Rocket — inclui — Multistage rocket. A multistage rocket is a rocket that drops its empty tanks on the way.

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