But if a major volcanic eruption has polluted the stratosphere with thin haze, the eclipse will be dark red, ashen gray, or blood-black.
但如果发生大型火山喷发，导致同温层掺杂有薄云，那么月食就会变成暗红色、灰暗色或者血黑色。
The value ranges from 0 to 4 with 0 being a very dark eclipse and 4 a very bright orange or copper-red Moon.
代表非常暗的月食（月球几乎看不见），而4 则代表月球在全食时呈鲜亮橙或铜红色。
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