提成的英文：
deduct a percentage from a sum of money
push money

deduct是什么意思：
v. 扣除，减去

It was a pretty astute deduction.
那是一个颇为敏锐的推论。

The money is deductible from taxable income.
这笔款项可从应征税的公司收入中扣除。

The statement and deduction in the first paragraph are imprecise
第一段中的陈述和推断是不尽确切的。

percentage是什么意思：
n. 百分比，百分率；比例，部分

There is no percentage in it.
没有赚头。

The percentage of unskilled workers is small.
非熟练工的比例很小。

There is no percentage in arguing with him.
同他争论于事无补。

sum是什么意思：
n. 总数，总和；算数；金额；要点
v. 合计；总结

There are spots in (or on) the sum
人孰无过

This is the sum of this book.
这就是这本书的要点。

A Lump Sum Rate of ...
费用合计…