missing
/ˈmɪsɪŋ/adjective
1- (of a thing) not able to be found because it is not in its expected place（东西）失踪的; 下落不明的; 找不到的：
a quantity of cash has gone missing.
一大笔现金不见了。
1.1
- not present or included when expected or supposed to be缺掉的, 缺少的：
passion was an element that had been missing from her life for too long
激情是她生活中缺失很久的成分
you can fill in the missing details later.
你可以以后再补上缺少的细节。
1.2
- (of a person) absent from a place, especially home, and of unknown whereabouts（人）不在的, 缺席的; 失踪的：
she alerted police after her son went missing.
儿子失踪后, 她报了警。
1.3
- (of a person) not yet traced or confirmed as alive, but not known to be dead, after an accident or during wartime（人在事故或战争后）失踪的, 下落不明的：
servicemen listed as missing in action.
被列入战斗失踪者名单的军人。