单词 | trade wind |
释义 | trade wind/ˈtreɪdwɪnd![]() noun A wind blowing steadily towards the equator from the north-east in the northern hemisphere or the south-east in the southern hemisphere, especially at sea. Two belts of trade winds encircle the earth, blowing from the tropical high-pressure belts to the low-pressure zone at the equator.The southeast trade wind blows softly from the Coral Sea....
OriginMid 17th century: from the phrase blow trade 'blow steadily in the same direction'. Because of the importance of these winds to navigation, 18th-century etymologists were led erroneously to connect the word trade with ‘commerce’. |
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