[经] international standard classification of occupations
guó jì biāo zhǔn zhí yè fēn lèi ㄍㄨㄛˊ ㄐㄧˋ ㄅㄧㄠ ㄓㄨㄣˇ ㄓˊ ㄧㄝˋ ㄈㄣ ㄌㄟˋ