麻烦解释下面这句话,我实在不是很明白

问题描述:

麻烦解释下面这句话,我实在不是很明白
Down payment of 90% of expected revenues will be made on a quarterly basis.Final revenue distribution will be done after the annual audit.

down payment是首期\前期付款的意思,不宜译作定金.
预计收入的90%先按季支付,其余部分在年度审计后最终分配.