official; officer
official常指政府官员，行政官员，高级职员。
如：the government officials政府官员。
officer常指穿着特别制服的官员军官，武官等。
如：officers of state部长（职位较高的）；customs officer海关人员；
railway officer乘务员；an officer of the law法官；
police officer警官。
