comet
意味: A celestial body composed of ice, dust, and rock that develops a visible atmosphere (coma) and sometimes a luminous tail when its orbit brings it close to the Sun.
Comets originate from the Kuiper Belt or the Oort Cloud at the far reaches of the solar system. Short-period comets orbit the Sun in fewer than two hundred years, while long-period comets may take thousands. Historically, comets were regarded as omens; today they are studied for clues about the composition of the early solar system. The word is used figuratively to describe a person who rises to prominence suddenly.
例文
- Halley's Comet, visible from Earth roughly every seventy-six years, is perhaps the most famous periodic comet in recorded history. 哈雷彗星大约每七十六年从地球上可以看到一次,可能是有记载历史上最著名的周期彗星。El cometa Halley, visible desde la Tierra aproximadamente cada setenta y seis años, es quizá el cometa periódico más célebre de la historia documentada.約76年ごとに地球から観測できるハレー彗星は、おそらく記録に残る歴史上最も有名な周期彗星である。약 76년마다 지구에서 관측할 수 있는 핼리 혜성은 기록된 역사에서 아마도 가장 유명한 주기 혜성일 것이다.
- The comet's tail stretched millions of kilometres across the sky, pointed away from the Sun by solar wind. 彗星的尾巴在天空中延伸数百万公里,被太阳风吹向远离太阳的方向。La cola del cometa se extendía millones de kilómetros por el cielo, orientada en dirección opuesta al Sol por el viento solar.彗星の尾は太陽風に吹かれて太陽と反対方向に数百万キロメートルにわたって広がっていた。혜성의 꼬리는 태양풍에 의해 태양 반대 방향으로 수백만 킬로미터에 걸쳐 뻗어 있었다.
- Analysis of cometary ice has suggested that comets may have delivered water and organic molecules to the early Earth. 对彗星冰的分析表明,彗星可能曾将水和有机分子带到了早期地球。El análisis del hielo cometario ha sugerido que los cometas pudieron haber aportado agua y moléculas orgánicas a la Tierra primitiva.彗星の氷の分析から、彗星が初期地球に水と有機分子をもたらした可能性が示唆されている。혜성 얼음의 분석을 통해, 혜성이 초기 지구에 물과 유기 분자를 전달했을 가능성이 시사되었다.
発音
使い方ガイド
場面: academic, scientific, general
トーン: neutral
起源と歴史
From Greek komētēs meaning 'long-haired,' referring to the streaming tail of a comet. Entered English via Latin cometa and Old French comete in the 13th century.
文化的背景
Era: Modern
Generation: All ages
Social background: Universal
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