Changes the overall blend factor. Use this to fade in and out the blend layer.

改变整体的混合因素。产生混合层的淡入淡出。

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This has a black background, with fireworks that fade in and out of the background.

这是一个黑色的背景，与烟花爆竹的褪色和退出的背景。

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As our eyes scan different parts of the portrait, Mona's smile seems to fade in and out.

随着我们眼睛看画像部位的不同，蒙娜丽莎的微笑也就时有时无。

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They may shift in form and fade in and out.

WSJ: Great Scientists Don't Need Math

The similarities between Worms and NiL soon fade into the background: It's out with turn-based play and in with survival of the fastest.

CNN: Technology - Open-source, networkable shooter has Linux gamers buzzing

The break in hip-hop is that point in the song where the lyrics fade out, the instrumental and the percussion takes center stage, and the B-boys, the break-boys or the break- girls would come on to the dance floor and their thing.

NPR: Getting 'The Message' from Hip-Hop Lyrics