call on的意思是：vt.号召；拜访；请求。call on的例句是用作及物动词(vt.)He called on the workers to fight for their rights.他号召工人为争取自己的权利而斗争。call on【近义词】visit拜访。
一、词典解释点此查看call on的详细内容
1.要求;呼吁;号召
If youcall on someoneto do something orcall upon themto do it, you say publicly that you want them to do it.
e.g. One of Kenya's leading churchmen has calledon the government to resign...
肯尼亚一位高级宗教人士要求政府下台。
e.g. Frequently he was called upon to resolve conflicts.
不断有人要求他出面解决冲突。
2.(短暂)拜访,探访，看望
If youcall on someone orcall upon someone, you pay them a short visit.
e.g. Sofia was intending tocallon Miss Kitts.
索菲娅打算去拜访基茨小姐。
二、网络解释
1. 号召：5. 高二学生张华生,重病住院,需要进行手术. 但该生家境贫寒,无力支付医疗费用(medical cost). 我们号召(callon)大家支援,款额不限. 请把钱交给班主任. 班主任必须在本周星期五以前交到校长办公室.
2. 拜访：call off 取消 |callon 拜访 | care for 喜欢
3. 访问：call not started 呼叫未开始 |callon 访问 |call request 电话挂号
4. 呼吁：Un nuclear watchdog 联合国监测机构 |Callon 呼吁 | Nuclear bomb 核弹
三、例句
He called on the workers to fight for their rights.
他号召工人为争取自己的权利而斗争。
I'd like to call on you this Sunday.
我想这个星期天来找你。
I'm going to call on one of my former classmates.
我要去看望我的一位老同学。
You'd better call on your friends to help you.
你最好请朋友来帮你。
四、词汇搭配
五、词义辨析
call on的相关近义词
visit、call upon、turn、drop in、see
call on的相关临近词
Callou、call、call to account、call for rescue、calling program、call by pattern、call the doctor、Callyna siderea、call forwarding、call-transfer