on line和online区别

　　They can order their requirements on line.

　　他们可以在线下订单。

　　Sorry to bother you, but there's a call for you on line two.

　　很抱歉打扰你一下，二号线有你的电话。

　　The majority of small businesses now do their banking online.

　　大多数小企业现在都在网上办理银行业务。

　　I keep getting disconnected when I'm online.

　　我上网时不断掉线。