一种自然的思考方式是比照基于最高持续风力的萨菲尔—辛曾森飓风等级。
A natural way to think of it would be analogous to the saffir-simpson hurricane scale that is based on maximum sustained wind speed.
赫伯特创建的飓风等级能对即将来袭的飓风将会造成的破坏程度做出判断。
Herbert Saffir came up with his scale as a way to lay out what kind of damage an approaching storm would do.
阿祖：你可能已经注意到飓风伯爵正在不断变化着等级。
AZUZ: You might have noticed that Hurricane Earl keeps changing categories.
追踪地图、详细的威胁等级、来自预报员的更新，还有风暴强度改变的警报，飓风追踪者以一款iOS设备上的综合追踪应用程式来宣传自己。
With tracking maps, detailed threat levels, updates from the forecaster, and alerts for changes in the storm’s intensity, HT bills itself as a comprehensive tracking application for iOS devices.
四级飓风是131英里每小时以上风速，如果风速达到156英里每小时，你面对的是5级飓风，这是撒佛-辛普森等级的最高等级。
And when those winds reach 156 miles per hour, you're dealing with a category 5 hurricane. Those are the highest on the Saffir-Simpson scale.
四级飓风是131英里每小时以上风速，如果风速达到156英里每小时，你面对的是5级飓风，这是撒佛-辛普森等级的最高等级。
And when those winds reach 156 miles per hour, you're dealing with a category 5 hurricane. Those are the highest on the Saffir-Simpson scale.
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