首先，确立试验路段和试验数据的采集方法；
First of all, experimental road and gathering method of data is ensured;
根据试验路段的实测结果，证实了这种方法的效益。
According to the experimental results of the road segment detection, the benefits of the method are confirmed.
试验路段的实践，在每年年底团结起来，构成一个全样本雅思考试。
The test practice sections at the end of each unit together constitute a whole sample IELTS test.
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