the Beaufort scale
noun [ S ] environment specialized uk/ˈbəʊ.fət ˌskeɪl/ us/ˈboʊ.fɚt ˌskeɪl/
蒲福风级(用于测量风速等级,以0-12从无风到飓风划分)
a fixed set of numbers used for measuring and comparing wind speeds, from 0 (for calm) to 12 (for hurricane)
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