You will take each individual class among the stub classes of the secure email service and learn how to enhance it to provide required security features.

您将分析安全电子邮件服务存根类中的每个类，并了解如何对其进行增强，以提供所需的安全功能。

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Among the annoying challenges facing the middle class is one that will probably go unmentioned in the next presidential campaign: What happens when the robots come for their jobs?

中产阶级面临的恼人挑战之一是：当机器人要抢占他们的工作时，他们该怎么办？而这个问题在下届总统竞选中很可能被忽略。

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In terms of class, digital divide exists among different types of workers and between the upper and middle classes and the lower class.

在阶级方面，不同类型的工作者，以及中上层阶级和下层阶级之间，都存在着数字鸿沟。

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A well-known example was when women's education groups objected to a talking Barbie that declared, among other things, "Math class is tough!"

VOA: special.2009.04.06

We asked students as we will this year to describe themselves based on gut instinct early on, do you consider yourselves among those less comfortable with computers or just the mere idea of being in this class?

我们给学生提过这样一个要求，以后也还会再提这个要求,那就是凭直觉描述一下自己，你们是否认为自己不擅长电脑,还是只是单纯地想来上这门课？

哈佛公开课 - 计算机科学课程节选

Socrates demands for common ownership of property at least among the auxiliary class.

一致性要求太多,苏格拉底要求共有产权,至少后备阶级应具共有权。

耶鲁公开课 - 政治哲学导论课程节选

Moreover, McKinsey says it expects that the new middle class among them will not only be living in Shanghai and Beijing.

FORBES: The Future Of China's Luxury Auto Market

This C-Class was among the first on the block, and when I parked behind an older-generation C, the detailing was apparent.

FORBES: Car of the Week: 2012 Mercedes-Benz C250

As it came to life out in the Caribbean around October 22nd, Mitch's wind speeds had made weathermen class it among the most violent hurricanes on record.

ECONOMIST: After Mitch