[经] international system of control

guó jì jiān dū hé jiǎn chá zhì dù ㄍㄨㄛˊ ㄐㄧˋ ㄐㄧㄢ ㄉㄨ ㄏㄜˊ ㄐㄧㄢˇ ㄔㄚˊ ㄓˋ ㄉㄨˋ