It's one thing to forecast the weather, it's another thing to get it right!预报天气是一回事，预报准确又是另外一回事了！The old farmer has rich experience in forecasting the weather.这位老农在预报天气方面有着丰富的经验。We use atmospheric pressure readings from barometers to forecast the weather.我们利用气压计上的气压读数来预报天气。