vanish
/ˈvænɪʃ/verb
no obj.
1
- disappear suddenly and completely突然不见; 消失：
Moira vanished without trace.
莫伊拉消失得无影无踪。
1.1
- gradually cease to exist逐渐消失：
the environment is under threat - hedgerows and woodlands are vanishing.
环境正受到威胁, 一些灌木与林地在日渐消失。
2
- Mathematics become zero【数】变为零。
词源
Middle English: shortening of Old French e(s)vaniss-, lengthened stem of e(s)vanir, from Latin evanescere 'die away'.