在非真实条件句中，表示与过去事实相反的假设。

If I had known the truth, I would not have said that to him.

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要是他努力的话，他就会通过考试。非真实条件句。含义是。

He would pass the final exams if he worked hard.

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内部有效性——在条件变化的时候，其成因和结果还会是真实的么？

Internal validity - is there true cause and effect between variables.

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公共真实是社会和谐必不可少的条件。

Public truth is a fundamental condition of social harmony.

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条件的真实事件现场，并没有严格的再现。

The scene and conditions of the real events were not strictly reproduced.

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该实验方法能够模拟真实的火灾条件，因此测试结果比较可靠。

Since it can simulate the real fire, the results are reliable.

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该实验方法能够模拟真实的火灾条件，因此测试结果比较可靠。

Since it can simulate the real fire, the results are reliable.

youdao