This past winter's negative phase of the Arctic Oscillation transported old ice (four, five, and more years old) from an area north of the Canadian Archipelago.

去年冬天北极这种负向振荡从加拿大群岛北部地区运来多年老海冰(四，五年或更多年的老海冰)。

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Such melting from below is particularly efficient since the temperature at the ice-ocean interface is fixed by the phase equilibrium that must be maintained there.

海冰交接面上的相平衡*1保证了那里的温度稳定不变，这就使得这种由下而上的融化尤为高效。

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The change you will make during this phase is that you will cut out all bread, rice, potatoes, pasta, baked goods, fruit, candy, cake, cookies, ice cream, or sugar.

你的变化将在这一阶段，你将削减所有面包，米饭，土豆，面食，面包，水果，糖果，糕点，饼干，冰淇淋，或糖。

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We are currently in a not-so-cold phase of an ice age - The Quaternary Ice Age.

BBC: Looking for the greenhouse signal

Freeze dates are defined as the observed period when a lake or river was completely ice-covered, and break-up dates as the last ice break-up seen before the summer open-water phase.

BBC: Ice records reveal warming trend

The ice that preserved his mummified corpse lay unmelted, 3, 250 metres above sea level, for more than 5, 000 years - since the world was in its warmest phase following the most recent ice age.

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