zenith

n.顶点， 极点

noun

1. 天顶（太阳或月亮在天空中的最高点）
   the highest point that the sun or moon reaches in the sky, directly above you
2. 鼎盛时期；顶峰
   the time when sth is strongest and most successful

n. 顶峰；顶点；最高点 n. (Zenith)人名；(英)齐尼思 n. 真力时（瑞士名表）

zenith 天顶，鼎盛时期

来自中世纪拉丁语senit,来自阿拉伯语samt,路，通道，词源同azimuth,缩写自samt ar-ras,位于头顶的道路，ras,头。而该词最终又来自早期拉丁语semita,旁路，边路，se-,分开，mita-,改变，词源同mutual,由罗马人占据叙利亚时传入，后来罗马人离开，公元7世纪左右阿拉伯人又征服了叙利亚，该词又传入阿拉伯，最终又在公元14世纪进入了拉丁语。

1. His career is now at its zenith
   他的事业现在处于鼎盛时期。
2. The sun rises, reaches its zenith and sets.
   太阳升起，达到最高点，然后落下。
3. Pagers reached their zenith in 1994 when there were over 61 million in use.
   寻呼机在1994年达到顶峰，当时寻呼机的保有量达到了6100万部。
4. A meridian that passes through the observer's zenith.
   穿过观测者顶点的子午线。
5. The writer's fame was at its zenith.
   这位作家已经鼎鼎有名了。
6. A great circle on the celestial sphere passing through the zenith and perpendicular to the horizon.
   与水平线垂直的宇宙天体范围内的大圈，它经过天顶和地点。
7. During this period, the art of embroidery came to its zenith and reputed workers popped up.
   在此期间，在刺绣艺术来的顶峰，被誉为工人弹出。
8. The development of Korea's poetical theories witnesses their zenith in the Yi Dynasty.
   朝鲜王朝是朝鲜历史上诗歌理论发展的顶峰时期。
9. His dancing career is now past its zenith.
   他的舞蹈生涯现在已经过了顶峰时期。
10. At its zenith the Roman empire covered almost the whole of Europe.
    罗马帝国的全盛时期几乎占据了整个欧洲。
11. Southwest Combined University is a zenith of China's modern education.
    西南联大是中国现代教育史上的一个高峰。
12. Rome's power reached its zenith under the emperor Trajan.
    罗马帝国的势力在图雷真皇帝的统治下达到顶峰。
13. With the data of GPS meteorology network in Wuhan region, the article discussed the study of directly calculating precipitable water vapor with GPS zenith tropospheric delay.
    本文针对武汉地区GPS气象网资料，进行了GPS对流层延迟直接推算可降水量的研究。
14. From freezing night it turned to scorching day as the sun climbed toward its zenith.
    太阳升到正中，霜冻的夜晚变成了炎热的正午。
15. A blue light appeared in the zenith, and in some indescribable manner flickered down near the top of the rod.
    天顶出现了一道兰色的闪电，它以一种不可名状的方式闪烁不定地落到了垛棍顶端的附近。
16. At its zenith the moon is white and grey.
    在其顶峰的月亮是白色和灰色。
17. In addition, the number of the zenith delay parameters has effect on the tropospheric refraction.
    天顶延迟参数个数的选择对对流层折射有较大影响。
18. Reach the zenith of one's career, power, influence.
    达到事业的、权力的、影响力的顶峰。
19. An unwearied pall of cloud muffled the whole expanse of sky from zenith to horizon.
    一望无际的云幕蒙住了从天顶到地平线的整个夜空。
20. The sun had cleared the horizon. The sun had already climbed to its zenith.
    太阳已经升出了地平线。
21. He has reached the zenith of his career.
    他已经达到了他事业的顶峰。
22. The paper expounds the principle and the method of measuring zenith distance for celestial positioning based on the direction of gravitational force line.
    论述了在海上进行天文定位时以重力线作基准直接测定天体顶距的原理和方法。
23. It reached the zenith of its glory.
    它达到荣誉的顶峰。
24. Improved model of tropospheric zenith delay for GPS signal
    GPS信号对流层天顶延迟改进模型研究
25. When the jolly sunshine comes to stay, The sun had already climbed to its zenith.
    当阳光照耀的时候，太阳已经升到当空。
26. It feel as If we have traveled from nadir to zenith
    感觉上我们好像已从天底走到了天顶
27. By1987 there was only one American television maker left, Zenith.
    到1987年，美国只剩下Zenith这一家电视生产商。
28. The newspaper reached its zenith in the1960s, but has since declined.
    这份报纸在20世纪60年代到达了顶峰，但从那以后就衰落了。