Hybrid car e oil well: o que têm em comum

1. Passo 1. Hybrid car — tem como parte — Internal combustion engine. A combustion engine.
2. Passo 2. Internal combustion engine — utiliza — Petrol. The fuel of a petrol engine.
3. Passo 3. Petrol — é feito de — Crude oil. Petrol is made from crude oil.
4. Passo 4. Crude oil — utiliza — Oil well. Oil is extracted from wells.

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