「日銀は予期せぬマイナス金利導入を決めたが、」(DW English・RFI・BBC)：阿修羅♪ http://www.asyura2.com/16/hasan105/msg/264.html (Bank of Japan adopts negative interest rate to boost economy: DW English) http://www.dw.com/en/bank-of-japan-ado…