喜樂美語
  1. 1

    Glaciation is what happens when huge slow rivers of ice — glaciers — grow and cover the land, and also the marks they leave when they have gone. Over thousands of years the ice can valleys into a U-shape, dump hills of rock and soil, and the ground smooth. People say “the Ice Age” as if there were only one; though actually the Earth has had several long cold times, and glaciation can name the process, one of those cold times, or the look of the land afterwards. You meet this word in geography, not in the street.

    冰河作用（台灣說「冰河」；中國大陸較常說「冰川」）

    例句逐字對照、搭配詞、易混淆字

    這一義的完整解析還沒打開。訂閱後可以看到例句怎麼拆、常跟哪些字一起出現， 以及容易跟它搞混的字。

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組成From French glaciation, from glace (“ice”), plus the ending that names a process.

同家族的字

  • glacierthe mass of ice that does the covering
  • glacialof ice or glaciers; also used for something very slow or very cold in feeling
  • glacéfrom the same French ice word; here it means fruit given a shiny sugary coat

原始詞典資料3 筆記錄

以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。

glaciationnoun/ˌɡleɪsiˈeɪʃən/

  • 1

    The process of covering with a glacier, or the state of being glaciated; the production of glacial phenomena; an ice age

    • That the habitability of our planet was severely endangered by the significant rise in oxygen levels and reduction in methane due to oxygen-producing bacteria combined with the low luminosity of the Sun in the Proterozoic era (2500– 542 million years ago) is suggested by geological evidence for severe global glaciations in this epoch.
    • This simulation aims at describing the hydrological conditions at a Swedish deep repository of nuclear waste during a glaciation.
  • 2

    A particular instance of glacier formation.

    • Deposits of the Caribou Hills glaciation only locally retain a distinct hummocky morainal form, with filled kettle depressions and subdued knobs. Along the mountain fronts the marginal deposits of this glaciation reach an average altitude of slightly more than 3,000 feet.
    • Deposits from the glaciation are sparse, but glacial surfaces at 4150–4300 m in the Hunza area, above 2600 m in the Gilgit region, above 3200 m in the Haramosh region, above 4000 m on Deosai, and at 3200–3500 m in the Shigar valley area provide much evidence for this glaciation.
  • 3

    The act of freezing.

    • For cave glaciation to occur it is necessary that the air temperature outside the caves be negative either for all or part of a year; such conditions exist in many regions of the world.

資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。