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