meteoroid是什么意思
- 英式英标[\'mitɪər,ɔɪd]
- 美式音标[\'miːtɪərɒɪd]
英文词源
- meteoroid (n.)
- "rock floating in space, which becomes a meteor when it enters Earth's atmosphere," formed in English, 1865, from meteor + -oid.
实用例句
- 1. The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.
- 彗星的喷发速度在流星群的演化过程中起着重要作用.
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