求翻译：Weather forecasts are of great help to us. In rural areas, farmers Wshow much concern about the weather. They want to know when it will rain, when it will snow and whether their crops may be injured by frost or hail. Usually the weather forecasts can help them to learn the information they need bef. rehand and enable them to avoid heavy losses. In cities, people benefit from weather forecasts. They will early umbrellas or raincoats with them as they go to work or to school. They will change their clothes when weather changes. And weather forecasts mean even more to pilots of airplanes, drivers of cars, captains of ships and military leaders.是什么意思？

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