asteroid

IPA/ˈæstərɔɪd/
KK[ˈæstɚˌɔɪd]IPA/ˈæstərɔɪd/

asteroid — 名詞

  • asteroidsingular
  • asteroidsplural

1. a rocky object in space, much smaller than a planet, that travels around the sun

1.名詞B2
釋義

小行星

繞太陽運行、比行星小的岩石天體

a rocky object in space, much smaller than a planet, that travels around the sun — most are found in a wide belt between Mars and Jupiter.

例句

NASA tracks every large asteroid that passes near Earth.

美國太空總署會追蹤每一顆飛近地球的大型小行星。

subject + tracks + asteroid (typical scientific use)

Japan's Hayabusa2 probe reached the asteroid Ryugu in 2018 and brought rock samples back to Earth.

日本的「隼鳥二號」探測器於 2018 年抵達小行星「龍宮」，並把岩石樣本帶回地球。

named mission + asteroid + named target (mission collocation)

常見搭配
  • large asteroid
  • near-Earth asteroid
  • asteroid belt
  • asteroid impact
同義詞
  • minor planet

    the formal scientific term used in astronomy papers

  • planetoid

    older or literary word for the same kind of object

  • space rock

    informal everyday phrase used in news reports

文法句型

asteroid + verb (orbit, hit, strike)

用法筆記

Subject of verbs like 'orbit', 'pass', 'strike', 'hit'. Distinguish from 'comet' (icy, with a glowing tail) and 'meteor' (the streak of light when a small rock burns in the atmosphere).

常見錯誤

A bright asteroid streaked across the night sky.
A bright meteor streaked across the night sky.
once a rock enters Earth's atmosphere and glows, it is a meteor, not an asteroid.
The asteroid had a long shining tail behind it.
The comet had a long shining tail behind it.
tails belong to comets; asteroids are dry rocks.

asteroid — 形容詞

同根字

  • asteroidal
    形容詞C2

常見搭配

名詞搭配

  • asteroid belt
  • asteroid impact
  • asteroid mining
  • asteroid field

常用片語

  • near-Earth asteroid
  • killer asteroid
  • asteroid orbiting the sun

介系詞搭配

  • between (Mars and Jupiter)
  • near (Earth)
  • around (the sun)