Pocket watch e carro elétrico: o que têm em comum

1. Passo 1. Pocket watch — evoluiu para — Wristwatch. The watch moved to the wrist.
2. Passo 2. Wristwatch — evoluiu para — Smartwatch. The form factor of a wristwatch.
3. Passo 3. Smartwatch — tem como parte — Lithium-ion battery. Powered by a lithium-ion battery.
4. Passo 4. Lithium-ion battery — faz parte de — Traction battery. The battery is assembled from many lithium-ion cells.
5. Passo 5. Traction battery — faz parte de — Carro elétrico. Energy is stored in the traction battery.

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