vanish

1. V-I If someone or something vanishes, they disappear suddenly or in a way that cannot be explained. 突然消失; 神秘失踪

He just vanished and was never seen again. 他就这么突然消失了，再也没有人见到过他。

Anne vanished from outside her home last Wednesday. 上周三安妮在自己家门外神秘失踪了。

2. V-I If something such as a species of animal or a tradition vanishes, it stops existing. 消亡

Many of these species have vanished or are facing extinction. 这些物种中的许多已经消亡或是正濒临灭绝。