call out唤起；出动；大声叫唤
call on访问,拜访；号召,请求
I will call on him tomorrow.
我明天将去拜访他
call for要求；需要；提倡；邀请；为…叫喊
For overseas markets, the process may call for a modified product.
在海外市场,这一过程有时要求对产品进行改进
call after v. 追喊；以...命名
Because I'm a man, I don't want woman to give me a call after drinking.
作为男人,我不想接到喝酒后的女人的电话.