后来，其他研究人员测量了密度差，发现了一个显著的差异。
Later, other researchers measured the density differential and found a significant difference.
基于年龄、住处和教育水平，妇女们之间存在显著的差异。
There were significant differences among women based on age, place of residence, and educational levels.
在统计学的意义上，这两个样品没有显著的差异。
The difference between the two samples was not statistically significant.
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