[经] irredeemable foreign-exchange standard

bù kě duì huàn wài huì zhì ㄅㄨˋ ㄎㄜˇ ㄉㄨㄟˋ ㄏㄨㄢˋ ㄨㄞˋ ㄏㄨㄟˋ ㄓˋ