light-year

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Light-year
A light-year or lightyear (symbol: ly) is a unit of measurement of length, specifically the distance that light travels in a vacuum in one year. While there is no authoritative decision on which year is used, the International Astronomical Union (IAU) recommends the Julian year.
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Free English-Vietnamese DictionaryDownload this dictionary
light-year
light-year
danh từ năm ánh sáng, quang niên một khoảng thời gian rất dài
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English - Thai, Dictionary of CherngXDownload this dictionary
light-year
n. ระยะการเดินทางของแสงในหนึ่งปี, ปีแสง

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