[经] limits to importing national currencies

běn bì xiàn chāo rù jìng xiàn é ㄅㄣˇ ㄅㄧˋ ㄒㄧㄢˋ ㄔㄠ ㄖㄨˋ ㄐㄧㄥˋ ㄒㄧㄢˋ ㄜˊ