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最近兩天，隨著較強(qiáng)冷空氣的逐漸逼近，我國北方大部份地區(qū)的溫度急劇下降。請看報(bào)道：
Residents of North China have to get their heavy woollens out from
today with a cold
front closing in and temperatures set to drop appreciably.
Beijingers will feel autumn slipping away with the leaves blown away by
increasingly cold winds. Winter will set in by the middle of next month.
Cold front 的意思是"冷鋒"，即冷空氣氣團(tuán)的前鋒部分。Front在氣象學(xué)中指的是"鋒"，也就是冷暖氣流的交界處。如：active
front（活躍鋒），arctic front（北極鋒）。此外，"寒流"可表達(dá)為cold
current.
（中國日報(bào)網(wǎng)站編） | 
