noun🔗Share海星，星鱼 Any member of the taxonomic class Asteroidea; a starfish"The marine biologist studied the asteroid's five arms carefully. "那位海洋生物学家仔细地研究了那只海星的五个腕足。animalbiologyoceanastronomyChat with AIVocabulary GamePractice Reading
noun🔗Share小行星，陨星 A naturally occurring solid object, which is smaller than a planet and is not a comet, that orbits a star"Scientists track the paths of asteroids in space to predict if any might get close to Earth. "科学家们追踪太空中小行星的轨道，以预测是否有小行星可能会接近地球。astronomyspacesciencegeologyChat with AIVocabulary GamePractice Reading
noun🔗Share小行星，陨星 In the Solar system, such a body that orbits within the orbit of Jupiter"Astronomers track the paths of each asteroid to predict if any might get close to Earth. "天文学家们追踪每一颗小行星的运行轨迹，以便预测是否有任何小行星可能会靠近地球。astronomyspaceChat with AIVocabulary GamePractice Reading
