Ministry of Education 《Revised Mandarin Chinese Dictionary》

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Word	伴星
Bopomofo	`ㄅㄢ^ˋ` `ㄒㄧㄥ`
Hanyu pinyin	bàn xīng
Interpretation	雙星中亮度較弱或質量較小的天體。如天狼伴星。