n.[U][C]

1. 省略；刪除
   The omission of "for" in this sentence is incorrect.

   這一句中省略"for"是不正確的。

2. 遺漏；疏忽；失職
   This task does not allow any omissions.

   這項工作不容許有任何疏忽。

   The omission of this chapter from the third edition was a gross oversight.

   第三版漏印這一章是個大疏忽。