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asteroid
n
asteroidal
adj
asteroidal
adj
例
Asteroids vary in size from tiny fragments to large bodies hundreds of kilometers across.
Scientists study asteroids to learn about the early solar system and potential threats to Earth.
Some asteroids contain valuable minerals and resources that could be mined in the future.
The asteroid impact that led to the extinction of the dinosaurs occurred approximately 66 million years ago.
NASA's mission to study the asteroid Bennu aims to gather data that could help protect Earth from future asteroid impacts.
