Far away, farther away, till it vanishes.

远了，更远了，终于不见踪影。

youdao

Knowledge has to be improved, challenged and increased constantly or it vanishes.

知识需要提高和挑战才能不断增长，否则，它将会消亡。

youdao

The lonely shadow of his sail drifts ever further away until it vanishes into the deep blue sky.

他那孤零零的帆影渐行渐远，直至消失在碧蓝的天空中。

youdao

The other is that it vanishes within seconds, leaving no toxic residue.

FORBES: The Ozone Solution

Artistic grace vanishes as mysteriously as it came.

ECONOMIST: Marc Chagall

The second part of the system captures heat wasted during the first part, which usually sneaks up the chimney or otherwise vanishes unnoticed, and uses it to provide space heating or hot water.

FORBES: Big Apple Gambles on Clean Heat and Power