People use satellites today to send messages on car telephones, and a similar service was offered to airline passengers two or three years ago.
今天，人們輕鬆地坐在裝有電話的汽車裡，利用衛星傳遞訊息；兩、三年後，坐在航行中的飛機裡，也能享受到這種通訊服務了。