立冬啦关于冬天不可不知的3个单词_BEC初级作文

立冬啦关于冬天不可不知的3个单词

williwaw的词源不确定，一种可能是willy-willy即whirly（旋转的）,whirlwind（旋风）的缩略变体。

"Williwaw" describes a violent windstorm created when gravity pulls high-density cold air down from a mountain to the sea. Williwaw is a colloquial word for a katabatic wind in Alaska, where the strong winds can be dangerous for local fishermen.

火地岛重力风指的是由于重力的缘故形成的携带稠密空气的剧烈风暴。它是一个口语词汇，用来指阿拉斯加的一种重力风，这种强风对当地的渔民非常危险。

The origin of the word "williwaw" is unknown; the Oxford Dictionary dates the use of the word back to the middle of the 19th century. And if you want to impress your friends, you should also learn the term "katabatic winds." That's a term meteorologists use to describe gusts of wind associated with the buildup of dense air. And such winds aren't confined to cold areas.

这个词的起源并不清楚。牛津词典上该词的使用可以追溯到二十世纪中期。如果你想在你的朋友面前酷一把，那你还得知道“重力风”这个词。这是气象学家们常用来形容集结了稠密空气的阵风。这种风并不局限在寒冷地区。

Another famous katabatic wind is known as a Santa Ana, which blows over southern California in autumn and winter. Santa Anas are warm, dry winds created when air is compressed as it moves down a mountain range. These dry katabatic winds are associated with spreading wildfires.