magnitude

magnitude — 名詞

1. how large, serious, or important something is, especially when the scale of it m

1.名詞B2
釋義

規模;重要

事物的大小或重要程度

how large, serious, or important something is, especially when the scale of it matters for understanding its full effects or significance.

例句

The team did not fully understand the magnitude of the problem until the data arrived.

團隊直到數據送達,才完全了解問題的規模。

Residents were shocked by the magnitude of the flood damage across the whole town.

居民對整座城鎮洪水災情的規模感到震驚。

collocation: magnitude of [something]

同義詞
  • scale

    focuses on range or level with an implicit reference standard

  • extent

    emphasises the physical or conceptual boundaries of something

  • significance

    stresses meaning or consequence rather than physical size

  • scope

    suggests the breadth of coverage or the range of items affected

反義詞
  • insignificance

    indicates a lack of importance rather than small size

  • triviality

    suggests something so minor it is barely worth noticing

文法句型

magnitude + of + noun phrase

adjective + magnitude

用法筆記

Often used with 'of' followed by a noun phrase describing the thing being assessed. Frequently modified by adjectives such as 'full', 'true', 'sheer', or 'real' to emphasize the scale.

常見錯誤

I did not know the magnitude how big it was.
I did not know the magnitude of the problem.
💡'magnitude' takes 'of' + noun, not a 'how' + adjective clause.

2. a number on a fixed scale that shows how bright a star, planet, or other object

2.名詞C1
釋義

星等

天體亮度的數字等級

a number on a fixed scale that shows how bright a star, planet, or other object in the sky appears when seen from Earth.

例句

Astronomers measure the magnitude of stars to compare how bright they really are.

天文學家測量恆星的星等,以比較它們實際的亮度。

astronomy: stellar magnitude scale

The telescope revealed a galaxy with a magnitude too faint for the human eye.

望遠鏡顯示出一個星等太暗、肉眼無法看見的星系。

同義詞
  • brightness

    general perceptual term; magnitude is the specific numerical measure

文法句型

magnitude + of + number

adjective + magnitude

用法筆記

The astronomical magnitude scale is inverted: a lower number indicates a brighter object, and very bright objects have negative values (e.g., Sirius at −1.46). Commonly paired with 'apparent' (brightness as seen from Earth) or 'absolute' (intrinsic brightness at a standard distance).

常見錯誤

The star has a big magnitude.' (meaning bright).
The star has a small magnitude.
💡In astronomy, a smaller magnitude number means a brighter star.

3. a number that describes the strength or energy released by an earthquake, measur

3.名詞C1
釋義

震級

地震釋放能量的強度分級

a number that describes the strength or energy released by an earthquake, measured using a standard numerical scale.

例句

The earthquake had a magnitude of 7.2, causing major damage to the city.

那次地震規模為 7.2,對該市造成重大損害。

seismology: earthquake magnitude scale

Scientists recorded a small magnitude 3.1 tremor near the volcano last night.

科學家昨晚在火山附近記錄到一次規模 3.1 的小型震動。

同義詞
  • strength

    everyday term for earthquake size; magnitude is the precise numerical measure

文法句型

magnitude + number

adjective + magnitude

magnitude + of + number

用法筆記

Each whole-number step on the scale corresponds to roughly 32 times more energy released. Typically used without an article in the pattern 'magnitude [number]' (e.g., 'a magnitude 6.2 earthquake'). Modern reports usually cite the moment magnitude scale (Mw) rather than the older Richter scale.

常見錯誤

The earthquake measured 7 magnitude.
The earthquake measured magnitude 7.
💡The standard word order is 'magnitude [number]'.