crab nebula是什么意思 crab nebula怎么读
crab nebula的英文翻译是什么意思，词典释义与在线翻译
Noun:- a remnant of a supernova detected first in 1054 AD
crab nebula的用法和样例
- Its remnants form the Crab Nebula.
它的残余物组成了蟹状星云。 - Today, the Crab Nebula is still expanding and it will eventually dissolve in the interstellar gas cloud nearby.
蟹状星云仍然在膨胀最终会溶入星际物质而消散。
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