柴油 cháiyóu diesel fuel
How to remember 柴油: 柴 firewood + 油 oil = diesel fuel.
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How it is used
- 'Diesel fuel' - 柴油发动机 (cháiyóu fādòngjī) diesel engine.
- Contrast 汽油 (qìyóu, gasoline/petrol); 柴油 powers trucks, buses, generators.
- 柴 (chái) originally firewood; a straightforward fuel term.