income的区别 turnover与final

turnover是营业额的意思，而final income则是最终收入的意思，区别可以从以下例子看出：

I know that the turnover of business is quite big， but final income is much less after deducting cost.

我知道营业额是相当大的，但扣除成本后的最终收入要少得多。