英语翻译To the extent that an underestimate or overestimate is caused by changes in the quantities of work,neither error will effect the contractor’s profit beyond the markup in the unit prices.

英语翻译To the extent that an underestimate or overestimate is caused by changes in the quantities of work,neither error will effect the contractor’s profit beyond the markup in the unit prices.
英语翻译
To the extent that an underestimate or overestimate is caused by changes in the quantities of work,neither error will effect the contractor’s profit beyond the markup in the unit prices.

英语翻译To the extent that an underestimate or overestimate is caused by changes in the quantities of work,neither error will effect the contractor’s profit beyond the markup in the unit prices.
由于价位的偏高或偏低是因产品数量的变化所引起的,因此不管是高价还是低价都不会导致合同签订者单价所获的利益超过限额.
意思就是：价位不是固定的,买的多了价钱便宜,少了就贵,但不管是贵还是便宜,都在限额之内：再便宜不会亏,再贵不会超过一定的限额.

答案是：对于低估或高估，一个是在工作的数量变化引起的程度，也错误会影响到承包商的超越了利润的单位价格标记。

工作范围大小的改变会引起范围上的过高或过低的估计，即使没有错误在市场零售价的方面也会影响承包人的利益。
更准确的翻译还有结合上下文语境

在某种程度上,低估或高估是数量的变化所造成的工作,也没有错误会影响承包商的利润超出标记在单位价格。