英语翻译In some areas of the world the weather is very changeabl

英语翻译In some areas of the world the weather is very changeable and this fact plays an important part in the daily lives of the people.Farmers,fishermen and sailors ____16____ know about these changes ahead of time.Space scientists and airplane pilots especially need weather ____17____.Since earlier time,men have watched the sky,the wind,and the atmosphere,as well as a lot of ____18____ weather signs,in order to make weather forecasts,but often their weather forecasts have not been true.Now there are government stations in many places ____19____ weather conditions very carefully.They use a lot of scientific ways to help them make their forecasts.For example,they have ways to know the speed and the ____20____ of the wind.And then they can forecast the path of a storm.They have special balloons,ships and airplanes to help them increase the possibility to be true.and they make use of radar（雷达）,satellites（卫星） and computers to gather ____21____ information.Today when a plane ____22____ from an airport,the pilot can know what kind of weather to expect when he ____23____ the next stop.If there is ____24____ rain or snow in the mountains,we can know the day and even the hour that a river may rise many miles away.When a storm is coming in some direction,the people in that area can learn about it ahead of time and ____25____ for it.