After the first JAR file is downloaded, the applet class loader will use the collected content information for efficient downloading of JAR files.

下载了第一个JAR文件后，applet类装载器将使用收集的内容信息高效地装载JAR文件。

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First, an efficient approximate Bayesian model class selection scheme is used to estimate the number of concurrent events.

首先，使用一个有效的近似贝叶斯模型类的选择方案来估计并发事件数目。

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With our first-class computer system, Trailseekers provides a quick and efficient booking system that organizes air-tickets, car-hire, hotels and Tours at the click of a button.

我们一流的电脑系统可以提供快速、高效的预定服务，通过点击就可以组织机票预定、租车预定、饭店预定和旅行预定。

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But in response, a Royal Mail spokesman told the BBC that any suggestion that the second class post was more efficient than the first was "completely incorrect".

BBC: NEWS | Business | Use second class, says Postwatch