单词 | sun |
释义 | sun [sǝn] ASTRONOMY The star about which the earth revolves; it is a globe of gas 8.7 × 105 miles (1.4 × 106 kilometers) in diameter, held together by its own gravity; thermonuclear reactions take place in the deep interior of the sun converting hydrogen into helium releasing energy which streams out. Also known as Sol. |
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