On the left, the purple, cyanand green hues signify low, medium, and high altitudes, respectively.
左图中的紫色、蓝绿色和绿色分别表示低、中和高海拔。
The CAA said ash levels would now be graded as low, medium or high, and airlines would be notified if levels reached medium or high.
CAA说,火山灰的等级分为低、中、高档,如果达到中档或高档,将通知航空公司。
We have four levels of heating and four levels of cooling that include low, medium, high and very high.
我们有四级冷调及热调系统:低、中、高及超高。
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