light year

名词 n.
中文释义
英 /ˈlaɪt.jɪə/    美 /ˈlaɪt.jɪɹ/

英文释义

名词 n.
  1. A unit of length used to measure extremely large distances, equal to approximately 9.46 trillion kilometres 10 trillion kilometres (10¹⁶ metres), equivalent to the distance light travels in one Julian year.
    — We live our lives in three dimensions for our threescore and ten allotted years. Yet every branch of contemporary science, from statistics to cosmology, alludes to processes that operate on scales outside of human experience: the millisecond and the nanometer, the eon and the light-year.
  2. A very long way. figuratively,in-plural,informal
    — The marathon runner in the lead is light years ahead of the one at the back.
  3. A very long time. figuratively,in-plural,informal
    — Some of Leonardo da Vinci’s inventions were light years ahead of their time.

词形变化

light years plural ly abbreviation lightyear alternative light-year alternative
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