asteroid
含义: A small rocky body orbiting the Sun, most commonly found in the asteroid belt between Mars and Jupiter, ranging in size from a few metres to hundreds of kilometres across.
Asteroids are remnants from the early solar system that never coalesced into a planet. They are distinguished from comets by their lack of a visible coma or tail. In public discourse, asteroids feature prominently in discussions of planetary defence and extinction-level impact risks. The term is sometimes used figuratively to describe something hurtling towards an inevitable collision.
例句
- The European Space Agency's mission aimed to characterise the composition and structure of a near-Earth asteroid. 欧洲航天局的任务旨在表征一颗近地小行星的成分和结构。La misión de la Agencia Espacial Europea tenía como objetivo caracterizar la composición y estructura de un asteroide cercano a la Tierra.欧州宇宙機関のミッションは、地球近傍小惑星の組成と構造を解明することを目的としていた。유럽우주국의 미션은 지구 근접 소행성의 조성과 구조를 규명하는 것을 목표로 했다.
- An asteroid roughly ten kilometres in diameter is believed to have caused the mass extinction that ended the dinosaurs' reign. 据信,一颗直径约十公里的小行星造成了终结恐龙统治的大规模灭绝。Se cree que un asteroide de unos diez kilómetros de diámetro provocó la extinción masiva que puso fin al reinado de los dinosaurios.直径約10キロメートルの小惑星が、恐竜の時代を終わらせた大量絶滅を引き起こしたと考えられている。직경 약 10킬로미터의 소행성이 공룡 시대를 종식시킨 대멸종을 일으킨 것으로 여겨진다.
- Mining asteroids for rare metals has moved from science fiction to a serious topic of discussion among aerospace engineers. 从小行星上开采稀有金属已从科幻小说变成了航天工程师们认真讨论的话题。La minería de asteroides para extraer metales raros ha pasado de la ciencia ficción a un tema de debate serio entre los ingenieros aeroespaciales.小惑星からの希少金属の採掘は、SFの世界から航空宇宙エンジニアの間で真剣に議論されるテーマへと移行した。소행성에서 희귀 금속을 채굴하는 것은 공상 과학의 영역에서 항공우주 엔지니어들 사이에서 진지하게 논의되는 주제로 발전했다.
发音
用法指南
语境: academic, scientific, general
语气: neutral
起源与历史
From Greek asteroeidēs meaning 'star-like,' coined by astronomer William Herschel in 1802 to describe these small celestial bodies that appeared as points of light rather than discs.
文化背景
Era: Modern
Generation: All ages
Social background: Universal
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