proiferation

例句：

1. 1. The government's decision to raise interest rates has led to a proiferation of the currency.
   政府决定提高利率，导致货币升值。
2. 2.The company's stock prices have been appreciating steadily since the announcement of its new product line.
   自从宣布推出新产品线以来，该公司的股票价格一直在稳步上涨。
3. 3.The price of oil is expected to appreciate in the coming years due to increased demand.
   由于需求的增加，预计油价在未来几年将上涨。