The integration between technical theoretical knowledge and technical practical knowledge is the keystone and difficulty in the theory and practice of curriculum of vocational education.

整合技术理论知识与技术实践知识是职业教育课程理论与实践的重点和难点。

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Geothermal energy is buried miles deep underground and is, for all practical purposes, impossible to find without a fair amount of technical knowledge, testing and so forth.

FORBES: America's Best Places For Alternative Energy