中文：

折价率是指基金净值与基金交易价格的差额与基金净值的比率。简单来说，折价率反映了基金交易价格低于其净值的程度。

折价率的计算公式为：折价率 = (基金净值 - 基金交易价格) / 基金净值。当基金净值高于基金交易价格时，折价率小于0；而当基金净值低于基金交易价格时，折价率大于0。

折价率对于投资者来说具有重要意义。在投资过程中，投资者可以利用折价率来评估基金的价值，判断投资的风险和收益。同时，折价率也可以作为投资者投资决策的参考指标之一，帮助投资者更好地把握投资机会。

英文：

The discount rate refers to the difference between the net asset value (NAV) of a fund and its trading price, divided by the NAV. In simpler terms, the discount rate reflects the degree to which the trading price of a fund is below its NAV.

The calculation formula for the discount rate is: discount rate = (NAV - trading price) / NAV. When the NAV is higher than the trading price, the discount rate is less than 0; and when the NAV is lower than the trading price, the discount rate is greater than 0.

The discount rate is of great significance to investors. In the investment process, investors can use the discount rate to evaluate the value of a fund, assess investment risks and returns. Additionally, the discount rate can serve as one of the reference indicators for investors' investment decisions, helping investors better grasp investment opportunities.