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单词 protosun
释义

Definition of protosun in English:

protosun

noun ˈprəʊtə(ʊ)sʌn
Astronomy
  • The sun at an early stage of its formation, before becoming dense enough to sustain nuclear reactions.

Origin

1940s; earliest use found in Scientific Monthly. From proto- + sun.

Definition of protosun in US English:

protosun

nounˈprəʊtə(ʊ)sʌn
Astronomy
  • The sun at an early stage of its formation, before becoming dense enough to sustain nuclear reactions.

Origin

1940s; earliest use found in Scientific Monthly. From proto- + sun.

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更新时间:2025/1/14 14:26:36