The photo is about a small lions mane jellyfish, Cyanea capillata, with a diver in the background.

这张照片是关于一只小狮子鬃毛水母，发形霞水母属，背景是一名潜水员。

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Photo tip: Add layers to your composition-that is, multiple elements beyond the main subject, such as foreground and background elements.

拍照小技巧：给你的构图分层——也就是说，给拍摄主体添上多种元素，例如前景和背景元素等。

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The above photo shows a carpet of fallen leave beneath nearly bare trees, with green grass in the background serving as a memory of summer gone by.

上面的这张照片显示了在几乎光秃秃树木下的落叶地毯，背景里的绿色草地，留下了已经过时的夏天记忆。

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The page uses the words "Augusta National" and even has a background photo of the clubhouse.

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If it's a text post, the author's larger wall photo appears faintly in the background.

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Web Workers, for instance, is an emerging system for isolating a browser's individual tasks into separate "threads, " making it easier for a browser-based program to perform a computationally intensive task such as photo-editing in a background tab while the user is attending to something else, like e-mail, in the foreground.

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