The trade wind is a kind of natural cold source in spring, autumn and winter.

新风在春、秋、冬季是一种天然的冷源。

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The motion of waves conresponds to contraction of cold source and expand of heat source.

换句话说，几率波在冷源区是收缩的，在热源区是扩散的。

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It also gives out a reliable evidence for selecting cold source equipment economically and reasonably.

为经济、合理地选择冷源设备提供了可靠的依据。

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Europe's food retailers depend on a complex network of brokers, cold stores and meat-cutting plants around the continent from which to source the ingredients wherever they are cheapest, says the BBC's Christian Fraser, in Paris.

BBC: Horsemeat found in Ikea meatballs in Czech Republic

During the Cold War, Hanford was a buzzing hive of activity, eventually becoming the main source of plutonium production for the nation's nuclear weapons program.

CNN: Federal funds aim to clean up nuclear wasteland

The closeness of Anglo-American military and intelligence ties, driven by the cold war, became a defining feature of British foreign policy and a source of tension between Britain and France, which led de Gaulle twice to veto British membership of the then European Economic Community, on the grounds of Britain's irremediable Atlanticism.

ECONOMIST: Britain and the cold war