在当今世界上存在的所有语言中，肯定有已经发展多年的复杂性。

In all the languages existing in the world today, there are complexities that must have been developed for years.

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随着科技的发展，许多过去只存在于科幻小说中的东西被带入了我们的日常生活。

With the development of technology, many things which only existed in science fictions are brought into our daily life.

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然而，即使计算机和机器人技术不断发展，社会上总存在着大量的枯燥、重复和机械的工作，以及许多没有一技之长而不得不做这些工作的人。

However, even with the development of computers and robotics, there are always plenty of boring, repetitive and mechanical jobs, and lots of unskilled people who have to do them.

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Is the probably illiteracy confined to third-world developing countries?

是否文盲只在,第三世界的发展中国家存在呢？

麻省理工公开课 - 媒体、教育、市场课程节选

There is a debate among rich countries and developing countries about trade-related intellectual property rights.

发达国家和发展中国家,在贸易知识产权上存在着纠纷。

耶鲁公开课 - 公正课程节选

Problems like the artificial heart are still unsolved, there's still room for innovation, still room to learn from what hasn't worked before, to learn from science, and to design something better.

人工心脏技术中存在的问题还没有解决,还有创新发展的空间,仍有从未涉足的领域来研究,通过对科学原理的学以致用,去设计出更好的产品

耶鲁公开课 - 生物医学工程探索课程节选