分析，得出以下结果：三个年级的被动词汇在不同的学习阶段都有不同程度的增长，但不是直线。
The results show that passive vocabulary size progresses very well at the early stages of learning, but not at the later stage;
通过阅读以下测试数据，您可以了解我们是如何得出这些测试结果的，并评估测试结果是否适用于您的环境。
By reading the following test data, you can see how we arrived at our results and evaluate whether or not the findings apply to your environment.
通过阅读以下测试数据，您可以了解我们是如何得出这些测试结果的，还可以评估这些结果是否适用于您的环境。
By reading the following test data, you can see how we arrived at our results and evaluate whether or not the findings apply to your environment.
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