V2EX updraft

Updraft

释义 Definition

updraft(名词):上升气流;空气因受热、地形或天气系统影响而向上运动的气流,常见于积云、雷暴、山地迎风坡等环境。(也可用于比喻“上升的推动力/助力”,但最常见义为气象学含义。)

发音 Pronunciation

/p.drft/

例句 Examples

The glider caught an updraft and rose quickly.
滑翔机捕捉到一股上升气流,迅速爬升。

Strong updrafts inside the storm can lift water droplets high enough to form hail.
风暴内部强烈的上升气流能把水滴抬升到足够高的高度,从而形成冰雹。

词源 Etymology

由 **up-**(向上)+ draft/draught(气流、通风、牵引)构成,字面意思就是“向上的气流”。其中 draft/draught 在英语里既可指“气流”,也可指“拉力/牵引力”,因此 updraft 也偶尔被引申为“向上的推动”。

相关词 Related Words

文学作品 Literary Works

  • Mark Twain, Life on the Mississippi(作品中多处谈到河面风与气流现象,常见 draft/draught 与气流相关用法;updraft 作为具体术语在后期自然/航空语境作品更常出现)
  • Antoine de Saint-Exupéry, Wind, Sand and Stars(航空随笔中常涉及上升气流、乱流等飞行气象概念,语境中可见 updraft 或同类术语的使用)
  • Richard Bach, Jonathan Livingston Seagull(与飞行、气流相关的描写语境中常出现类似 updraft 的词汇与概念)
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