Arctic sea icecap disappears, leaving polar bears homeless and changing the Earth's energy balance dramatically as reflective ice is replaced during summer months by darker sea surface.
北极冰帽会消融，令北极熊无家可归，更令地球能量平衡急剧改变。因为在夏季时，可反射光和热的冰层被颜色更深的海面所代替。
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