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English Definition
(名) As a noun
  1. A unit of length used for distances within the solar system; equal to the mean distance between the Earth and the Sun (approximately 93 million miles or 150 million kilometers).
  2. A soft yellow malleable ductile (trivalent and univalent) metallic element; occurs mainly as nuggets in rocks and alluvial deposits; does not react with most chemicals but is attacked by chlorine and aqua regia.
Part of Speech(名) noun
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天文单位tiānwén dānwèiAstronomical Unit; AU; 149,567,892 km
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