Or a planet with two stars may have one sun-like star, along with a red dwarf star that’s also common in multi-star systems.
在与我们太阳相似的恒星当中，有四分之一都存在于多恒星体系。
The only data point available for such multi-billion-year-old stars is a particular yellow dwarf in the Orion arm of the Milky Way.
对于这些星龄在数十亿年以上的老恒星来说，唯一的数据点就是银河系中猎户座旋臂上的那颗黄矮星。
Conventional super-rice varieties was bred through selecting semi-dwarf, big spike-type and multi-spike with broadly-adaptability type.
常规稻选育技术则通过“半矮秆、早长、根深”、大穗型和多穗广适应型超级稻品种选育取得成功。
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