disappearance
/ˌdɪsəˈpɪərəns/noun
usu. in sing.
1- an instance or fact of someone or something ceasing to be visible不见; 消失。
1.1
- an instance or fact of someone going missing or (in coded political language) being killed（人的）失踪; 被杀害（用于政治语言）：
the police were investigating her disappearance.
警察正在调查她的失踪。
1.2
- an instance or fact of something being lost or stolen（东西）丢失; 被盗：
an investigation is being carried out into the disappearance of the money.
正在对这笔钱的丢失进行一场调查。
1.3
- mass noun the process or fact of something ceasing to exist or be in use不复存在; 不再使用：
the disappearance of grammar schools.
文法学校的不复存在。