The rate in every respect is fluctuating波动 all the time such as coupon rate票面利率, bank rate, borrowing rate 借贷利率and so on. Economy can undergo from boom to recession. When demand exceeds supply供不应求, the inflation arises and the prices rocket up飞涨, which deteriorates恶化 the economic prosperity. Then depression comes. So to find out how to level out稳定 the pecuniary condition经济状况 is vital. And sometimes the prices will plummet暴跌;骤然下跌, which resulted in deflation通货紧缩. Whatever, the speculative投机的 time is for everyone just in economic resurgence经济复苏.
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