disappear

vanish, disappear, fade, evaporate

动词 disappear:

1. get lost, as without warning or explanation
   同义词：vanish, go away
2. become invisible or unnoticeable
   同义词：vanish, go away
3. cease to exist
   同义词：vanish
4. become less intense and fade away gradually
   同义词：melt

1. The sun disappeared behind a cloud.
   太阳消失在一片云后面。
2. Many beautiful fish are fast disappearing because of the severe pollution.
   因为污染严重，许多美丽的鱼类正在面临绝种。
3. My wallet has disappeared from the table.
   我放在桌子上的钱包不见了。

dis.ap.pear

v.intr.（不及物动词）
dis.ap.peared,dis.ap.pear.ing,dis.ap.pears
To pass out of sight; vanish.
消失；消逝
To cease to exist.
不复存在，灭绝

【引伸】
dis.appear.ance
n.（名词）
<参考词汇><同义词>disappear,evanesce,evaporate,fade,vanishThe central meaning shared by these verbs is .to pass out of sight or existence.:
这些动词的中心意思是.不见或不复存在.：
例句：
a skyscraper disappearing in the fog;
消失于雾中的摩天大厦；

例句：
time seeming to evanesce;
时间象在逐渐消失；

例句：
courage evaporating;
失去勇气；

例句：
hopes fading away;
失去希望；

例句：
memories vanishing slowly but surely. appear
记忆慢慢地而又确实地消逝了 appear