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the naval crisis in the arctic that america refuses to fix
俄羅斯
car
coast guard
icebreakers
polar star
源
russia's icebreakers make it king of the arctic and america is just a pauper
俄羅斯
car
icebreakers
源
the magnificent evolution of polar icebreakers
collection
history
icebreakers
monster machines
技术
科幻小说
源
a mammoth ice breaker frees a ship trapped in the frozen ocean
antarctica
ice
icebreakers
navigation
ships
技术
源
pictures: inside scandinavia’s biggest icebreaker
哥本哈根
瑞典
antarctic
arctic
climate change
environment
esof2014
icebreakers
methane
natgeo news watch
oceans
oden
ship
科学
源
forecast: more vessels stuck in antarctic ice
antarctic ice
antarctica
chilean sea bass
environment
featured
fishing
icebreakers
natgeo news watch
oceans
palmer
科学
源
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