During glacial ages that exist about 90% of the time, our Northern Hemisphere is mostly covered with ice up to several miles thick.
这一周期约90%的时间为冰川时代，在那期间，我们北半球大部分覆盖着厚达数英里的冰层。
This news comes after researchers reported a record low amount of sea ice up North.
该消息是在研究人员报告称北极海冰面积创下历史新低之后发布的。
What makes Grimsvotn different is that it lies under a huge glacier of the ice up to 12 meters thick.
让格里姆火山与众不同的是它处于一座厚达12米的巨大冰川之下。
If the pressure of the refrigerant vapor in the evaporator gets too low, it means that the evaporator is getting too cold and may begin to ice up.
如果蒸发器中制冷剂蒸汽的压力变得太低，这就意味着蒸发器太冷，可能开始结冰。
Standing in the sharply pointed bow, he gazed at the endless expanse of flowing ice, up and down the length of the river.
他站在桦皮舟尖吻般的船头上，眺望着上下无际的满江流冰。
Standing in the sharply pointed bow, he gazed at the endless expanse of flowing ice, up and down the length of the river.
他站在桦皮舟尖吻般的船头上，眺望着上下无际的满江流冰。
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