comet是什么意思_音标_用法_例句

简单释义：

n. 彗星；扫帚星

网络 慧星；科密；彗星状轨迹图

变形：

复数：comets  

完整释义：

n.

1.慧星
2.彗形物
3.【天文学】彗星;【航空】彗星机

例句：

1. The first human inhabitants of North America may not have exterminated the mammoths. The culprit might have been a comet.
   北美洲最早的人类可能不是灭绝猛犸象的凶手。真正的罪犯有可能是一颗彗星。

2. But like the tail of every other comet, Halley's tail is just dust.
   其实，哈雷的彗星与一般的彗星无异，都是由尘埃构成。

3. Thousands of chunks of material from the comet would have rained down on Earth, each one releasing the energy of a one megaton nuclear bomb.
   无数的大块彗星碎片雨点般落到地球上，每一个大块碎片的撞击都释放了一个百万吨级核弹所释放的能量。

4. Caught on camera over a swamp in Australia the stunning image shows the trail of the Comet Lovejoy as it passed close to Earth.
   这张拍摄于澳洲沼泽上空的照片美得让人眩晕，照片上显示着Lovejoy彗星划落接近地球时发出的光尾。

5. apoapsis in solar orbit; the point in the orbit of a planet or comet that is at the greatest distance from the sun.
   以太阳为中心的最远点；在天体运行轨道上距离太阳最远的点。

6. I knew you'd try to find something wrong with my comet, Lisa. You've always been petty and small, right from the beginning.
   我知道你一直在找我彗星的麻烦，丽萨，你刚才真是美丽小巧。

7. If you are fortunate enough to see a comet, don't give it just a casual glance and then vanish indoors.
   倘若你有幸看到彗星，不要随意扫上一眼就进到屋里。

8. As a comet gets closer to the sun, the ice on the surface of the nucleus begins turning into gas, forming a cloud known as the coma.
   当彗星接近太阳时，慧核表面的冰便升华成气体，形成了我们称为“彗发”的雾状结构。