planet
/ˈplænət/ 名词 A2中文： 行星
- Each of the seven major bodies which move relative to the fixed stars in the night sky—the Moon, Mercury, Venus, the Sun, Mars, Jupiter and Saturn.
- Any body that orbits the Sun, including the asteroids (as minor planets) and sometimes the moons of those bodies (as satellite planets)
- A body which is massive enough to be in hydrostatic equilibrium (generally resulting in being an ellipsoid) but not enough to attain nuclear fusion and, in IAU usage, which directly orbits a star (or multiple star) and dominates the region of its orbit; specifically, in the case of the Solar system, the eight major bodies of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.
- construed with the or this: The Earth.
复数 planets
来自图书馆
“Work is the best antidote to sorrow, my dear Watson,” said he; “and I have a piece of work for us both to-night which, if we can bring it to a successful conclusion, will in itself justify a man’s life on this planet.” In vain I begged him to tell me more.
A planet might as well leave its orbit.
“There is something true in what you say,” said the count, with that smile which made him so handsome; “I have descended from a planet called grief.”
At the same time, you will help to protect our beautiful planet.
在真实文章中学习planet
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