If want to earn price difference from inside interest rate wave motion, can buy the national debt that commercial bank bar trades or exchange market national debt so.

假如想从利率波动中赚取差价，那么可以购买商业银行柜台交易的国债或交易所市场国债。

youdao

Interest rate is the important lever of national regulation economy, is the regulation currency supply of Central Bank, is the important tool of macroscopic economic goal.

利率是国家调节经济的重要杠杆，是中央银行调节货币供应量，实现宏观经济目标的重要工具。

youdao

The Swiss National Bank surprised markets by cutting its key interest rate target by 0.25 percentage points, citing growing economic uncertainty amid sharp plunges in global equity markets and a reduced risk of inflation.

CNN: European markets routed

First, the National Development Bank (BNDES), whose loans cost about half the Selic rate, has expanded its lending by almost half.

ECONOMIST: Brazil's booming economy

PDVSA, the national monopoly, ensured an overvalued exchange rate and financed a spendthrift and corrupt state and irresponsible bank lending, simultaneously stifling private enterprise.

ECONOMIST: Chavez’s muddled new world | The