| 单词 | polar front |
| 释义 | polar front (once / 590966 pages) n WORD FAMILY polar front USAGE EXAMPLESThe lanternfishes congregate in an ocean region called the polar front, where cold polar water meets the warmer tropical water, creating a sharp temperature gradient. Scientific American(Jun 11, 2014) While the polar front grips the eastern United States, the western half will see above-average temperatures as a drought worsens, the National Weather Service said. Reuters(Jan 22, 2014) While the polar front grips the eastern United States, the western half will see above average temperatures as a drought worsens, the Weather Service said. Reuters(Jan 21, 2014) n the front of an advancing mass of colder air Syn|Hypo|Hyper cold front squall line a cold front along which squalls or thunderstorms are likely front (meteorology) the atmospheric phenomenon created at the boundary between two different air masses |
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