能帮我翻译下下面这段话么？急~~~

来源：百度知道 编辑：UC知道 时间：2024/05/16 10:19:48
Often the management fee is initially based on the total investor commitments to the fund (i.e., the fund size) as investments are made. After the end of the commitment period, ordinarily 4-6 years, the basis for calculating the fee will change to the cost basis of the fund, less any investments that have been realized or written-off.

往往是管理费是基于最初的总投资的承诺，该基金（即基金规模）作为投资的进展。在承诺期结束时，一般4-6年，根据计算的费用将变更为成本基础上的基金，那么任何投资，已经实现或注销