protostar的意思是“原初星”，读音为：英 [ˈprəʊtəʊstɑː(r)]、美 [ˈproʊtoʊstɑːr]。

protostar的意思是“原初星”，属于英语词汇。

用法和双语翻译：Protostar is a star that has not yet fully formed. It is usually used to refer to a very young star that has not yet begun to shine. It is usually observed through spectroscopy or other methods of observation. Protostar is a very interesting topic in astronomy, and it is also a very important stage in the formation of stars.

中文翻译：原初星是一颗尚未完全形成的恒星，通常用于指尚未开始发光的非常年轻的恒星。通常通过光谱学或其他观测方法来观察原初星。在天文学中，原初星是一个非常有趣的课题，也是恒星形成过程中的一个非常重要的阶段。

常见用法：Protostar is often used to refer to a very young star that has not yet begun to shine, and it is usually observed through spectroscopy or other methods of observation.

以上信息仅供参考，如需了解更多与protostar有关的内容，请查阅英语词典或咨询专业人士。

protostar的意思是“原始星”，例句：The protostar is a young star in the process of formation.

翻译：原始星是正在形成的年轻恒星。

短语列举：

1. protostar formation 原始星形成

2. protostar nebula 原始星云

3. protostar system 原始星系

4. protostar evolution 原始星演化

5. protostar mass 原始星质量

6. protostar luminosity 原始星光度

7. protostar temperature 原始星温度

8. protostar outflow 原始星喷流

9. protostar accretion disk 原始星吸积盘

10. protostar outflow jets 原始星喷流射流

用法：Protostar is a noun，and it can be used as a subject or object in a sentence. It usually refers to a young star in the process of formation. You can use it to describe the characteristics of a star or its environment.