登录
a period of 12 months based on which a company, government or individual does financial reporting or budgeting
财政年度
a period of time in history or someone's life, during which significant events happen
时代
(of the moon) to gradually decrease in its visible illuminated surface as it progresses from full to new moon
减弱
(of the moon) to progressively display a larger illuminated section until it turns into a full moon
变大
a usually small meteor that burns with a bright light when entering the earth's atmosphere
流星
a glowing cloud of gas and dust in outer space, often the result of a star explosion or formation
星云
a small celestial body that becomes visible as a meteor upon entrance into the atmosphere of the earth
流星体
the branch of physics that studies celestial objects and phenomena in the universe, such as stars, galaxies, and cosmic radiation
天体物理学
the colored lights, mainly green and red, in the sky seen primarily near the northern magnetic pole
北极光
the colored lights, mainly green and red, in the sky seen primarily near the southern magnetic pole
南极光
the time as measured at Greenwich, London, on the line of 0° longitude, used to calculate the time across the globe
格林尼治标准时间
the calendar introduced by Pope Gregory XII in 1582, as a modification for the Julian Calendar, presently used in many parts of the world
公历
(astronomy) the celestial zone in the sky where the sun, moon, and planets appear to move, traditionally divided into twelve equal segments, each associated with a distinct name and symbol
黄道
