| 单词 | 天体的 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔accretion〕Astronomy An increase in the mass of a celestial object by the collection of surrounding interstellar gases and objects by gravity.【天文学】 吸积，天体增大：因重力吸引星际间的物质而引起天体的增大美国传统〔altitude〕Astronomy The angular distance of a celestial object above the horizon.【天文学】 地平纬度：地平线以上天体的角度距离美国传统〔astrolabe〕A medieval instrument, now replaced by the sextant, that was once used to determine the altitude of the sun or other celestial bodies.星盘：一种中世纪的仪器，曾用来测量太阳或其它天体的高度，现在已被六分仪取代美国传统〔astronomical distance〕The distance from one celestial body to another, measured in light-years, parsecs, or astronomical units.天文距离：从一天体到另一天体的距离，以光年，秒差距和天文单位来度量美国传统〔celestial sphere〕An imaginary sphere of infinite extent with the earth at its center on which the stars, planets, and other heavenly bodies appear to be located.天球：一个虚构的以地球为中心的球体，在其上可看到恒星、行星和其他天体的位置美国传统〔celestial〕Gravity governs the motions of celestial bodies.万有引力控制着天体的运动。柯林斯高阶〔cycle〕The orbit of a celestial body.天体的轨道美国传统〔eclipse〕The partial or complete obscuring, relative to a designated observer, of one celestial body by another.蚀：天体的部分或全部受到其他天体的遮掩而变得晦暗，这种现象与特定观测者相关美国传统〔geochemistry〕The chemistry of the composition and alterations of the solid matter of the earth or a celestial body.地球化学：研究地球或天体的地壳构成及变化的化学美国传统〔geology〕The scientific study of the origin, history, and structure of the solid matter of a celestial body.天体学：对天体的固体物质的来源、历史和结构的科学研究美国传统〔immersion〕Astronomy The obscuring of a celestial body by another or by the shadow of another.【天文学】 掩始：一个天体被另一个天体或另一个天体的阴影遮掩美国传统〔latitude〕Astronomy The angular distance of a celestial body north or south of the ecliptic.【天文学】 黄纬：黄道以南或以北天体的用角度量的距离美国传统〔limb〕Astronomy The circumferential edge of the apparent disk of a celestial body.【天文学】 天体的边缘美国传统〔meridian〕Astronomy A great circle passing through the two poles of the celestial sphere and the zenith of a given observer.【天文学】 天体的经线：通过天体上两极和一假定观测物天顶的大圈美国传统〔orb〕One of a series of concentric transparent spheres thought by ancient and medieval astronomers to revolve about Earth and carry the celestial bodies.透明天球层：古代和中世纪天文学家想象的、围绕地球并承载着天体的一系列透明天球之一美国传统〔perihelion〕The point nearest the sun in the orbit of a planet or other celestial body.近日点：绕日运行的行星或其它天体的椭圆轨道上离太阳最近的一点美国传统〔pole〕Astronomy A celestial pole.【天文学】 天体的极地美国传统〔primary〕A celestial body, especially a star, relative to other bodies in orbit around it.恒星：在轨道上圈绕其相对其他天体的天体，尤指恒星美国传统〔radius vector〕Astronomy A straight line connecting the center of the sun or another body with the center of a planet, comet, or another body orbiting around it.【天文学】 动径；向径：连接太阳或其它天体的中心与绕其运行的行星、慧星或其它天体的直线美国传统〔refraction〕Astronomy The apparent change in position of celestial objects caused by the bending of light rays entering Earth's atmosphere.【天文学】 大气折射：由于天体的光线进入地球大气层时发生折射而造成的其位置明显改变美国传统〔regression〕Astronomy Retrograde motion of a celestial body.【天文学】 退行：天体的逆行的动态美国传统〔semidiameter〕The apparent radius of a celestial body when viewed as a disk from Earth.半径：一般指从地球上看到的象圆盘的球形天体的二维平面半径美国传统〔space probe〕A spacecraft carrying instruments intended for use in exploration of the physical properties of outer space or celestial bodies other than Earth.太空探测器：携带用于对地球外的太空和其他天体的物理性质进行探测的工具的航天器美国传统〔spherical〕Of or relating to celestial bodies.天体的：天体的，有关天体的美国传统〔sphery〕Of or relating to the celestial spheres.天体的，与天体有关的美国传统〔star〕Something regarded as resembling such a celestial body.被描述为类似于这样天体的东西美国传统〔synodic〕Relating to the conjunction of celestial bodies, especially the interval between two successive conjunctions of a planet or the moon with the sun.会合的，会合周期的：与天体的会合，尤指某颗行星或月亮与太阳的两次连续会合的间隔有关的美国传统〔transit〕The passage of a smaller celestial body or its shadow across the disk of a larger celestial body.掩星：一个较小的星体或它的阴影通过一个较大天体的圆平面美国传统〔vertex〕Astronomy The highest point reached in the apparent motion of a celestial body.【天文学】 天顶：一个天体的明显运动达到最高点美国传统〔x-ray astronomy〕The branch of astronomy that deals with the properties of celestial bodies as indicated by the x-rays they emit.X射线天文学：天文学的分支学科，它利用天体放射的X光来研究天体的特性美国传统〔zenith〕The highest point above the observer's horizon attained by a celestial body.天体的最高点：通过天体到达的在观测者视平线之上的最高点美国传统 |
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