学生实际接触外语时间少，缺乏使用外语的内在动力和外部条件，是造成外语教学费时低效现象的主要原因。

The inefficiency in foreign language teaching lies in students' less contact with foreign language, lack of the inner motive and outside conditions of using it.

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现行以行政和法律手段为主的耕地保护机制下，农民缺乏保护斟地的内在动力。

Under the existing mechanism of cultivated land preservation dominated by administrative and legal means, farmers lack the inner motivation of cultivated land preservation.

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心理的不成熟是实施网络违法犯罪的内在驱动力，家庭的引导不力、学校的缺乏重视则不利于对中学生网络违法犯罪的防控。

But meanwhile illegal and criminal ACTS appear. They result from middle school students' psychological immaturity and the lack of family education and due attention from schools.

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