| It's necessary | Hay que |
| It's our duty | Es nuestro deber |
| It's our responsibility | Es nuestra responsabilidad |
| It's up to us | Nos toca a nosotros |
| We're obligated to | Estamos obligados a |
| electric car | el carro eléctrico |
| electrical appliance | el aparato eléctrico |
| future | el porvenir |
| nuclear energy | la energía nuclear |
| solar energy | la energía solar |
| they should | deben |
| to destroy | destruir |
| to develop | desarrollar |
| to discover | descubrir |
| to throw out | botar |
| they should | deben |
| to destroy | destruir |
| to develop | desarrollar |
| to discover | descubrir |
| to throw out | botar |