disappear
/ˌdɪsəˈpɪə(r); ˌdɪsə`pɪr/ v
1 [I]
(a) no longer be visible; vanish 消失; 失踪
The plane disappeared behind a cloud. 飞机飞入云中不见了.
The rash soon disappeared. 疹子很快就消了.
(b) stop existing 不复存在
His anger soon disappeared. 他的怒气一会儿就消了.
The problem won't just disappear. 这问题不会就这样不了了之的.
(c) be lost, esp without explanation 遗失（尤指无法解释的）
My passport has disappeared
it was in my pocket a moment ago. 我的护照丢了, 刚才还在口袋里呢.
(euph 婉) Things tend to disappear when he's around, ie He steals them. 只要有他在, 东西就爱丢.
2 (idm 习语) do a disappearing act disappear, esp when needed or being looked for 失去踪影（尤指被需要或寻找时）
It's typical of Bob to do a disappearing act just when there's work to be done! 一有事情要做, 鲍勃就没人影儿了, 他就是这样!