1.用作形容词，意为“在线的”“联网的”“联机的”等。2.用作副词，意为“在线”。如：You can book seats online.你可以在线预订座位。online短语：online help联机帮助；online community网络社区；online rumor网络谣言。
online造句
1、An online office mixer?
2、Recently, she bought a gas heater online!
3、Vista should be easier to update online.
4、The report has been fiercely discussed online.
5、Even eBay, the online auctioneer, keeps quiet.