You could use Ajax to handle many of the user interaction events in the background, and then to update portions of the page, without requiring a full portal refresh cycle.

您可以使用 Ajax 在后台处理许多用户交互事件，然后更新页面的各个部分，而无需完整的门户刷新周期。

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BACKGROUND: the different level of proteins regulating cell cycle and their correlation is the main criteria to differentiate the benign and malignant cellular proliferation.

背景：细胞周期调控蛋白水平及其相互关系是良恶性细胞增殖的主要区别标准。

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The Altun fault experienced an intracontinental cycle of extension-compression during Neogene in a background of sinistral strike-slipping.

新近纪阿尔金断裂在左行走滑的大背景下经历了一个陆内的拉张—挤压旋回。

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Socialitical has a background in social media marketing but has adapted its techniques for the election cycle and now offers Facebook political campaign strategy, and is expanding into Twitter for political campaigns.

FORBES: Will The US Election Be Won on Facebook?