asteroid

From Longman Dictionary of Contemporary EnglishRelated topics: Astronomyasteroidas‧te‧roid /ˈæstərɔɪd/ noun [countable] HAone of the many small planets that move around the Sun, especially between Mars and JupiterExamples from the Corpusasteroid• Astronomers had accidentally caught a comet in the act of turning into an asteroid.• Comets and asteroids are subjects for Chapter 14.• Two large asteroids have passed alarmingly close to Earth in the past few years.• For example, Vesta, the fourth-largest asteroid, reflects light in a unique way: some 50 meteorites match it closely.• Extraction of helium-3 from the surfaces of asteroids is not likely to compare with that from the Moon.• We do it now on a small scale to bring the rocks into Earth orbit from the asteroid belt.• Finally, the total exposed surface area of the asteroids is less than the surface area of the Moon.• These asteroids with Earth-crossing orbits and orbital periods greater than one Earth year constitute the Apollo family.Origin asteroid (1800-1900) Greek asteroeides “like a star”, from aster “star”

单词	asteroid
释义	asteroid From Longman Dictionary of Contemporary EnglishRelated topics: Astronomyasteroidas‧te‧roid /ˈæstərɔɪd/ noun [countable] HAone of the many small planets that move around the Sun, especially between Mars and JupiterExamples from the Corpusasteroid• Astronomers had accidentally caught a comet in the act of turning into an asteroid.• Comets and asteroids are subjects for Chapter 14.• Two large asteroids have passed alarmingly close to Earth in the past few years.• For example, Vesta, the fourth-largest asteroid, reflects light in a unique way: some 50 meteorites match it closely.• Extraction of helium-3 from the surfaces of asteroids is not likely to compare with that from the Moon.• We do it now on a small scale to bring the rocks into Earth orbit from the asteroid belt.• Finally, the total exposed surface area of the asteroids is less than the surface area of the Moon.• These asteroids with Earth-crossing orbits and orbital periods greater than one Earth year constitute the Apollo family.Origin asteroid (1800-1900) Greek asteroeides “like a star”, from aster “star”
随便看	look for somebody/something look forward to look forward to doing look forward to doing something look forward to something look ghastly look glance at your watch look glance consult your watch look good etc look good/bad etc look green about the gills look green about/around the gills look green around the gills look happy etc look here look high and low look in look in the eye look into look into something look into space look kindly on look kindly on somebody/something look like look like a drowned rat