express as 与express in 的区别

express as 表示成,以...表示.
He did not express any views as to the description of the young man.
他没有表示对那年轻模样人的任何看法.
express in 用…陈述
The number of units of useful information contained within a linear dimension, usually expressed in units per inch.
在一单位长度内包含的有用信息单位数.通常用每英寸多少单位表示.