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- That comet is invisible to the unaided eye. 那顆彗星只用肉眼是看不到的。
- A comet is at perihelion when it is closest (=very close) to the sun. 彗星最接近太陽(yáng)時(shí)，它就是在近日點(diǎn)。
- If I had binoculars, I could see that comet clearly. 如果我有望遠鏡，我就可以清楚地看見(jiàn)那顆彗星。
- The comet's ice, heated by the sun, rapidly and spectacular sublimate to gas. 彗星上的冰塊在太陽(yáng)熱的作用下迅速而壯觀(guān)地升華成氣體。
- The central portion of the head of a comet. 彗核彗星頭部的中心部分
- Why else might the comet have come undone? 是什么導致了慧星的滅亡?
- The rotation in the elliptic is retrograde. 在橢圓內的運動(dòng)屬于逆進(jìn)型。
- Halley's comet calls on the earth every 76 years. 哈雷彗星每76年造訪(fǎng)地球一次。
- The comet passed by in the twinkling of an eye. 俯仰之間，流星閃過(guò)。
- The Earth's path round the sun is elliptic. 地球繞太陽(yáng)的軌跡是橢圓的。
- Halley's comet visits the Earth once in 76 years. 哈雷彗星每七十六年經(jīng)過(guò)地球一次。
- In that way, Pluto acts like a comet. 也就是說(shuō)，冥王星的行為像一個(gè)彗星。
- Nutlet is Brown, long elliptic, have 3 edge. 小堅果褐色,長(cháng)橢圓形,具3棱。
- Some people feel that this light was a comet. 一些人認為這種光是一種慧星。
- The dialogue is elliptic and full of dark hints. 這次談話(huà)很簡(jiǎn)單，充滿(mǎn)了模糊的暗示。
- Sepals 5, petaloid, white, elliptic. 萼片5，瓣狀，白色，橢圓形。
- I can hardly wait to see the new comet. 我急不可待地要見(jiàn)到新彗星的出現。
- Anthers elliptic, ca. 0.5 mm.Gynostemium 6-lobed. 花藥橢圓形，約0.;5毫米。
- The comet will appear in the southern sky. 彗星出現在南方的天空。
- Leaf blade usually ovate to elliptic, or obovate. 葉片通常卵形的到橢圓形，或倒卵形。
