cold back-up 冷备份
back-door cold front 逆向冷锋
Back in the cold 再度告急
Back in the cold war 回想冷战
Cold weather back home 天冷就回家
Arctic sea ice is important because it throws sunlight back into space, keeping the sea cold.
VOA: special.2009.05.05
Lee quickly pulled his men back to a place called Cold Harbor, not far from Richmond.
VOA: special.2009.11.26
And while drivers and passengers alike in large motor homes are supposed to keep their seat belts fastened on the road, it's not uncommon to find someone in back reaching for cold refreshments, spreading maps out on a table - even taking a nap, fully reclined!
VOA: standard.2010.03.01
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