call in 和call at 的区别

call in 和call at 的区别

热心网友

call inTo take out of circulation:回收：使退出流通：calling in silver dollars.回收银币To summon for assistance or consultation:邀请：召来做助手或顾问：call in a specialist.邀请一个专家To communicate with another by telephone:打电话：用电话与别人联系：Has the boss called in today?老板今天打电话来了吗?call at打给某人, 访问,停靠两者都有拜访的意思。