vi.

1. 突然不见；消失
   When I turned around, she had vanished.

   我转过身，她已不见了。

2. 消逝；绝迹
   Many species have now vanished from the earth.

   许多物种已在地球上绝迹了。

vt.

1. 使不见；使消失

n.

1. 【语】消失音[C]

v.

1. disappear suddenly and completely.
   ▸gradually cease to exist.
2. Mathematics  become zero.