omissions
An omission is something that has not been included or has not been done, either deliberately or accidentally.
exclusion
He was surprised by his wife's omission from the guest list.
他对他的夫人未在获邀宾客之列感到意外。
Williams is the most notable omission from the 33-strong party announced yesterday.
在昨天宣布的33位名单上,威廉姆斯的遗漏最为明显。