| 1 | The smoke brought tears to my eyes. | |
| 2 | The delicious smell from the kitchen made our mouths water. | |
| 3 | The good news is that DC grids are cheaper to build. | |
| 4 | It is performed in AC or DC with voltages varying from some hundred volts to several tens of kilovolts. | |
| 5 | Direct-voltage transmission lines require a new federal and regional power grid strategy. |
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