Increases in the number of sucks were used as an indicator of the infant's attention to or preference for a given visual display.

吮吸次数的增加表明婴儿注意到或是喜爱眼前出现的物品。

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The first feature is a visual indicator to the user that the retrieval for a specific document is continuing in the background, but has not yet finished.

第一个特性是一个可视化标志，使用户知道对特定文档的获取操作仍然在后台执行，但是还没有完成。

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Using this style of code is a strong visual indicator that it's an immutable class.

这种代码风格的使用从视觉上给出了一种强烈的指示：该类是一个不可变类。

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"This kind of visual indicator is a great step, but alone it's not enough, " she says.

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There's also a handful of elements that we seldom see in these apps, such as a direction-relative wind indicator, optional motion-driven navigation and visual themes.

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