Watermill e rocket: o que têm em comum

1. Passo 1. Watermill — tem como parte — Water wheel. A water wheel drives the mill’s mechanism.
2. Passo 2. Water wheel — faz parte de — Gunpowder mill. The drive.
3. Passo 3. Gunpowder mill — utiliza — Gunpowder. Production.
4. Passo 4. Gunpowder — é utilizado em — Rocket. The first rockets were powered by gunpowder.

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