parsec編輯正在努力提供更完整的內容，建議 20 分鐘後再回來看看parsecparsec — 名詞名詞1. a unit of distance used in astronomy, equal to about 3.26 light-years1.名詞釋義秒差距a unit of distance used in astronomy, equal to about 3.26 light-years例句The star is located about 10 parsecs away.