disappear同义词是evaporate、vanish
例句
1、
The sun disappeared behind a bank of clouds.
太阳消失在一大片云后面。
2、
Her nervousness quickly disappeared once she was on stage.
她一走上台紧张情绪便迅速消失了。
3、
The child disappeared from his home some time after four.
这孩子四点多的时候就离家不见了。