Directions:TranslatethefollowingparagraphintoChinese.
Cyberspace,ofcourse.isbiggerthanatelephonecall.Itencompassesthemillionsofpersonalcomputersconnectedbymodems-viathetelephonesystem-tocommercialonlineservices,aswellasthemillionsmorewithhigh-speedlinkstolocalareanetworks,officeE-mailsystemsandtheInternet.Itincludestherapidlyexpandingwirelessservices:microwavetowersthatcarrygreatquantitiesofcellularphonesanddatatraffic;communicationssatellitesstrunglikebeadsinthegeosynchronousorbit;low-flyingsatellitesthatwillsooncrisscrosstheglobelikeangrybees,connectingfolkstoofar–flungortoomuchonthegotobetetheredbywires.Somedayevenourtelevisionsetsmaybepartofcyberspace,transformedintointeractive“teleputers-calledfull-servicenetworksliketheonesseveralcable-TV”bysocompanies(includingTimeWarner)arebuildingalongtheoldcablelines,usingfiberopticsandhigh-speedswitches.
當然,網絡空間并不意味著只是打個電話。它包括數以幾百萬計的調制解調器，通過電話系統聯與商業聯網系統相連接的個人計算機以及數以百萬計通過高速通路與局域網絡、辦公電子郵件系統以及國際互聯網相連接的計算機。它還包括了日新月異飛速發展的無線通訊服務系統：能傳送大量蜂窩、移動電話信號和數據的微波發射塔;運行在地球同步軌道上串珠般的通訊衛星;以及象發怒的蜜蜂在地球上空嗡嗡亂飛，把因相隔遙遠或奔波不停而無法使用有線通訊設備的人們連接在一起的低空衛星。將來有可能有一天，連我們的電視機也會成為網絡空間的一部分，被那些所謂全方位網絡改造成交叉/互動式“電視機算計”;如今，就有好幾家有線電視公司(包括時代華納公司在內)正在原有電纜的基礎上，利用光纜和高速開關技術建設這種全方位的網絡系統。
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