The condition, which they imposed on the distribution of the regressor variable X in their construction of the estimators, is very restrictive.
但在把他们的估计中，对自变量的分布加上了很强的限制性条件。
The condition, which they imposed on the distribution of the regressor variable X in their construction of the estimators, is very restrictive.
但在把他们的估计中，对自变量的分布加上了很强的限制性条件。
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