周游许多国家以后，他发现中国的影响正在世界范围扩散。
Having travelled in many countries, he found China's influence is spreading worldwide.
但是，最新的研究表明，塑料也可以分解为可溶性物质，这些物质很容易在海洋环境中大范围扩散传播。
But the latest research suggests that plastic is also a source of dissolved substances that can easily become widely dispersed in the Marine environment.
度量分散情况：分散情况向我们提供了范围，或者给定数据集内数据扩散情况的度量手段。
Measuring the dispersion: the dispersion gives us a measure of the range, or spread of data within a given dataset.
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