请问call in 和call on都可以表示拜访某人,有何不同?Our salesmen call on their best account twice a month. We could call in on Patrick on the way to your mother's.

请问call in 和call on都可以表示拜访某人,有何不同?Our salesmen call on their best account twice a month. We could call in on Patrick on the way to your mother's. call on , call for, call in ,call up 分别是什么意思? 关于call的几个短语 call on call out call for call in 或者说有什么不同点和相同点? 请问call on和call at有什么区别? 请问on call 请问call in,call at,call on都有来访的意思,这三个词有什么区别吗?有例子说明一下更好了. call on,call in,call off的区别 call up; call in; call on;分别是什意思 如何区分call up 和call on call for call in call on call at 分别是什么意思?怎么用? call on call on On Call call on和 visit有什么区别?call on customers call at,call on drop in 的用法区别 CALL IN CALL ON 都有拜访的意思 怎么区分?call in 不是由来访的意思么？很晕阿有例句么？ call in call-in