从略的英文：
be omitted

omitted是什么意思：
v. [omit] 的过去式及过去分词形式；遗漏，疏忽

This part of the book may be omitted.
书的这一部分可以省略。

Percussion of the abdomen is often omitted.
腹部叩诊常被省略。

In circumstances where there is no ambiguity the subscripts are omitted
在不会引起含糊不清的情况下，下标可以省去。

I omitted to warm him not to smoke.
我忘了告诫他不要抽烟了。

Items marked with an asterisk can be omitted.
打星号的项目可以删去。