The symbiotic binary is a special system, consisting of a hot early type star and a cool late type supergiant with strong stellar wind, which forms an expanding envelope.
共生星双星是一颗有强大星风物质损失的红巨星与一颗早型热星组成的特殊双星系统。
A dark star is a theoretical type of star that may have existed early in the history of the universe before conventional stars were able to form.
暗物质星是理论上预言在宇宙早期可能存在的一类星体，它们在常规恒星形成之前存在。
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