Tests have shown over and over again that the sites with black text on a plain white background--with colors limited to the margins--get the highest conversion rates.

实验均表明，黑色文字白色背景，仅在边缘有色彩点缀的网站的转化率是最高的。

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Think, for instance, what happens on the it side when, as has happened so often lately, a domestic facility escapes negative refining margins by conversion to a terminal facility.

例如，考虑一下it方面发生的这样一个场景(最近尤其常见)，一个内部设备通过转换成一个终站设备(terminal facility)避免了炼油毛利变为负数。

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Hence, the current business model boasts a continuing upward trend of improving margins, improving conversion to paid subscriptions, and improved profitability of each subscriber.

FORBES: Netflix: Six Reasons Why You Love Your Netflix Subscription Increase (& Other Strategies)