updraft

/ˈəp-ˌdraft -ˌdräft/ (ame, mw)

updraft — noun

1. a current of air that moves upwards, especially one strong enough to lift birds,

1.名詞B2
釋義

a current of air that moves upwards, especially one strong enough to lift birds, gliders, or moisture that forms clouds

例句

The hawk caught an updraft and rose high above the valley without flapping its wings.

collocation: catch an updraft

Warm air rising from the sun-baked hillside formed a steady updraft that the paragliders used to stay aloft.

同義詞
  • thermal

    specifically refers to an updraft created by rising warm air, used in aviation and gliding

  • upcurrent

    more general term; less common in everyday speech

  • upflow

    technical term, often used for gases in industrial contexts rather than open air

反義詞

文法句型

updraft + verb (forms / carries / lifts)

a/an + updraft + of [gas]

用法筆記

Frequently used in aviation and weather contexts. In meteorology, an updraft is the opposite of a downdraft. Subject is often a type of aircraft, bird, or airborne object that is carried upward.

常見錯誤

❌The updraft pulled the smoke into the room.
✅The downdraft pulled the smoke into the room.
💡Updraft moves air upward; downdraft moves air downward.