A digestibility value of 70 - 80 percent seems a reasonable expectation.是什么意思？

A digestibility value of 70 - 80 percent seems a reasonable expectation.

70%-80% 的消化率似乎是合理的期望值.

digestibility

n. 消化的好坏，消化性，可消化性；

例句
A digestibility value of 70 - 80 percent seems a reasonable expectation.
70%-80% 的消化率似乎是合理的期望值.

value

n. 价值，价格，意义，涵义，重要性，（邮票的）面

例句
Cheques can only be accepted up to the value guaranteed on the card...
支票的承兑金额不可高于卡上所担保的数额。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。

percent

n. 百分比，百分数，百分之一；adj. 百分之…的，每一百中有…的，百分之…支付利息的；adv. 以百分之…地，每一百中有…地；

例句
Expenses are deductible only to the extent that in aggregate they exceed 7 percent of gross income.
只有在消费总额超过总收入的7%时才可免税。

seems

v. 好像，仿佛（ seem的第三人称单数 ）；

例句
Almost like an accident of nature, this family has produced more talent than seems possible.
就像是天缘巧合，这个家族不可思议地人才辈出。

reasonable

adj. 合理的，公道的，明白道理的，适当的，有理性的；

例句
What is a reasonable standard for one family is not applicable for another...
对一个家庭合理的标准并不适用于另一个家庭。

expectation

n. 期待，预期，前程，[数]期望

例句
...the expectation that profits will accrue.
希望利润会增加的期待