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- The comet nucleus itself is too small to hold on to these gases through gravitation. 慧核本身太小，它的引力不足以束缚住这些气体。
- A comet nucleus must eventually collide with the Sun or a planet, or be ejected from the solar system. 一个彗星核心早晚一定会跟太阳或行星相撞;或从太阳系被排斥掉.
- The "Deep Impact" made the powdery fragments on the surface of the comet nucleus splash in all directions. “深度撞击”使彗核表面的细粉状碎屑四处飞溅。
- The three-legged, box-shaped, 100 kilogram Philae is scheduled to attempt a landing on the comet nucleus after Rosetta's rendezvous in November 2014. 在2014年11月罗塞塔飞船到达目的地后，有着三脚支架、盒状、100公斤重的菲莱探测器，按照计划将在彗核上尝试着陆。
- The goal of TAOS project is measuring the number and size distribution of Kuiper Belt Objects ( KBOs ) down to a few kilometer size of cometary nuclei. 中美掩星观测计画的目标为测量彗星核大小至几公里的古柏带天体之数量与大小分布。
- The fortress was the nucleus of the ancient city. 这城堡是这座古城的中心。
- That comet is invisible to the unaided eye. 那颗彗星只用肉眼是看不到的。
- This nucleus has captured the slow-moving neutrons; The star captured a comet. 这核子已经俘获慢运动的中子；这颗恒星俘获了一颗慧星。
- The protoplasm outside the nucleus of a cell. 细胞质，细胞浆细胞分子外部的细胞质
- The supposed nucleus of the comet is the bright centre of the coma. 预想的彗核是明亮的慧发中心。
- A comet is at perihelion when it is closest (=very close) to the sun. 彗星最接近太阳时，它就是在近日点。
- These 1000 books will form the nucleus of the new school library. 这一千本书将构成学校新图书馆藏书的基础。
- If I had binoculars, I could see that comet clearly. 如果我有望远镜，我就可以清楚地看见那颗彗星。
- The atomic center is the nucleus, and the electronics winds revolve it. 原子的中央是原子核，电子绕着它旋转。
- The comet's ice, heated by the sun, rapidly and spectacular sublimate to gas. 彗星上的冰块在太阳热的作用下迅速而壮观地升华成气体。
- cometary nucleus 慧核
- A proton or a neutron, especially as part of an atomic nucleus. 核子质子或中心，尤指作为原子核的一个组成部分
- The central portion of the head of a comet. 彗核彗星头部的中心部分
- Why else might the comet have come undone? 是什么导致了慧星的灭亡?
- The colorless, liquid component of the cell nucleus. 细胞核液细胞核中无色的液体成分
