该航线常年冰冻，但是由全球变暖导致的气温升高使大部分冰面融化。
The route is usually frozen, but rising temperatures caused by global warming have melted much of the ice.
本周暴风雪造成的冰冻道路使华盛顿州西雅图地区的大部分地区陷入瘫痪，由于路面结冰过多而无法通行，周五学校关闭，公交线路暂停。
Icy roads created from storms this week paralyzed much of the greater Seattle, Washington area, where schools were closed and bus routes were suspended Friday as roads were too icy to navigate.
那里的地面温度符合使二氧化碳冰冻的温度，但在那之下是否还潜伏著水冰？
Its surface temperature matches that of carbon dioxide ice, but might water ice lie underneath?
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