on line的反义词是Off line
例句
1.
It's really a pleasure to chat on line.
在网上聊天真的很愉快。
2.
If a recruiter is looking for a job candidate on line， your name may just pop up the top of a web search. You will be sent an e-mail or alternative.
如果招聘单位在网上寻找应聘人员，你的名字会弹出在搜索结果的顶端，他们可能会给你发出电子邮件或者其他选择。
3.
Why don't you search that on line?
你为什么不在网上查一下呢
