明年，在一系列合并完成后，四家铁路公司将控制主要铁路运输公司90%以上的货运。

Next year, after a series of mergers is completed, just four railroads will control well over 90 percent of all the freight moved by major rail carriers.

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哪句话能最好地诠释以上文章的主要思想？

Which sentence best describes the main idea of the passage above?

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以上是使用SOA进行开发的主要问题。

These are some of the main problems of developing with SOA.

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I think that's the three most important reasons for what happened in the Internet space in China.

以上这些就是主要的三个原因,来解释中国互联网市场的现状。

斯坦福公开课 - 百度CEO李彦宏演讲：全球最大搜索引擎的发展课程节选

All right. So that's what the subject matter's going to be, and I'm going to tell you a little bit about how the course is organized.

好了,以上就是我们主要的学习内容,接下来,我稍微讲一点,咱们的课程安排

耶鲁公开课 - 基础物理课程节选