Artificial ageing is one of the hi-tech means to forge or alter documents.

人为老化是伪造或变造文件的高科技手段之一。

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In the whole learning process, try to rebuild a real language and character learning environment with new and hi-tech means.

在整个学习过程中，力争使用高新技术手段再造一个真实的语言、文字学习环境。

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It is the usage of hi-tech means that integrates the teaching, recognizing, reading, and writing of Chinese characters together.

正是由于高技术手段的使用，实现了汉字教学识读写用一体化。

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When we educate Chinese citizens who then return home, it means American taxpayers are helping to educate and fund our emerging hi-tech competition abroad.

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