[经] currently attainable standards

xiàn xíng kě dá dào de biāo zhǔn ㄒㄧㄢˋ ㄒㄧㄥˊ ㄎㄜˇ ㄉㄚˊ ㄉㄠˋ ㄉㄜ˙ ㄅㄧㄠ ㄓㄨㄣˇ