[经] combined maximum marginal tax rate
zuì gāo zōng hé biān jì shuì lǜ ㄗㄨㄟˋ ㄍㄠ ㄗㄨㄥ ㄏㄜˊ ㄅㄧㄢ ㄐㄧˋ ㄕㄨㄟˋ lv4