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- The coma of a comet. 彗星的彗发
- The central portion of the head of a comet. 彗核彗星头部的中心部分
- Orbits of a comet may be open or close. 粗略来说,彗星可以开放或封闭式轨道绕日运行。
- A novel method for measuring the coma of a lithographic projection system by use of mirror-symmetry marks, Dongqing Zhang, Xiangzhao Wang, Weijie Shi，Optics &laser technology, (accepted). 基于光学对准的光刻机投影物镜密集线焦深原位检测技术，施伟杰、王向朝、张冬青、王帆，中国激光（已录用）。
- The tail of a comet, a kite, an aircraft, a procession. 彗星、风筝、飞机、行列的尾部。
- (astronomy) the center of the head of a comet; consists of small solid particles of ice and frozen gas that vaporizes on approaching the sun to form the coma and tail. 在天文学中称彗星的头部；由微小的冰粒和固态气体组成，在太阳风的蒸发下形成慧尾。
- Since brightening unexpectedly by nearly one million fold in late October, the last three months have found the coma of Comet 17P/Holmes both expanding and fading. 自从十月底，它的亮度无预警地增加一百万倍之后，在接下来的三个月内，17P/霍姆斯彗星的彗发慢慢地扩张且变暗。
- In January2004, the Stardust spacecraft flew through the coma of comet Wild2 and captured thousands of cometary dust grains in special aerogel collectors. 在2004年1月，星尘号飞船从“怀尔特2”彗星的彗发中穿过并用专门的气凝胶收集器捕获了数千彗星尘埃颗粒。
- The cake we made was somewhat of a failure. 我们做的蛋糕不大成功。
- In January 2004, the Stardust spacecraft flew through the coma of comet Wild2 and captured thousands of cometary dust grains in special aerogel collectors. 在2004年1月，星尘号飞船从“怀尔特2”彗星的彗发中穿过并用专门的气凝胶收集器捕获了数千彗星尘埃颗粒。
- He doubles the parts of a farmhand and a miner. 在这出戏里他既扮演雇农又扮演矿工。
- He went about in the disguise of a sailor. 他伪装成海员到处流窜。
- The novel unrolls the history of a certain woman. 那本小说揭露了某个女子的过去。
- The war was lost because of a shortage of munitions. 战争因军火不足而失败。
- A man appeared at the castle gate in the guise of a woodcutter. 一个男子打扮成樵夫的模样出现在城堡的门口。
- Examine the falsework of a house. 检查一座房屋的临时鹰架。
- The appearance of a comet caused universal dismay in the ancient world. 在古代，彗星的出现引起普遍的恐慌。
- It's natural to slack2 off towards the end of a hard day's work. 一天紧张工作快结束的时候有些放松是自然的。
- In 1994, Hubble captured the historical event of a comet smashing into Jupiter. 1994年,哈勃掌握千载难逢的机会,记录了彗星撞向木星的震撼过程。
- We have just observed the collision of a comet, Schumacher-Levi, with Jupiter. 我们已经观测到一个（被命名为）Schumacher-Levi的彗星与木星的碰撞。
