名词是absence，例如：
1.There has been much gossip about the possible reasons for his absence.关于他缺席的原因有很多传言。
2.A role as senior diplomat would be a good alibi for his absence.高级外交官的角色将是他缺席的上佳托词。
3.The decision was made in my absence.这个决定是我不在的时候作出的。
名词是absence
n. 没有；缺乏；缺席；不注意
He was requested to give the evidence of absence.
他被要求提供不在场的证据。
His absence went unremarked.
没有人注意到他不在场。
She did not mention her mother's absence.
她没有提到她母亲的缺席。
I can't think of any possible explanation for his absence.
我想不出他缺席的任何理由。
The case was dismissed in the absence of any definite proof.
此案因缺乏确凿证据而不予受理。
