Now,peopleusesatellites(衛星)todomanythings.Sofar,manhasi...
問題詳情:Now,peopleusesatellites(衛星)todomanythings.Sofar,manhasinventedfourkindsofsatellites. 1 ofthemisusedtostudytheweather.Weathersatellitescan 2 anypartoftheworld.Theycanwatchcloudsandstrongw...