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单词 baseline
释义

WordReference Random House Learner's Dictionary of American English © 2024
base•line /ˈbeɪsˌlaɪn/USA pronunciation   n. [countable]
  1. Sportthe area on a baseball diamond within which a runner must stay when running from one base to another.
  2. Sportthe line at each end of a tennis court that marks the in-bounds limit of play.
  3. a basic standard;
    guideline: These results formed a baseline for future studies.
Also, ˈbase ˌline. See -lin-.
WordReference Random House Unabridged Dictionary of American English © 2024
base•line  (bāslīn′),USA pronunciation n. Also, base line′. 
  1. [Baseball.]the area between bases within which a base runner must keep when running from one base to another.
  2. [Tennis.]the line at each end of a tennis court, parallel to the net, that marks the in-bounds limit of play.
  3. (in perspective drawing) a horizontal line in the immediate foreground formed by the intersection of the ground plane and the picture plane.
  4. a basic standard or level;
    guideline:to establish a baseline for future studies.
  5. a specific value or values that can serve as a comparison or control.
  6. Printing[Typography.]the imaginary line on which the bottoms of primary letters align.
  7. SurveyingSee under triangulation (def. 1).
  8. Electronicsa horizontal or vertical line formed on the face of a cathode-ray tube by the sweep of the scanning dot.
  9. Nautical, Naval Terms[Naval Archit.]a line on the body plan or sheer plan of a hull, representing a horizontal reference plane for vertical dimensions.

adj. 
  1. basic or essential.
  • base1 + line1 1740–50

Collins Concise English Dictionary © HarperCollins Publishers::
baseline /ˈbeɪsˌlaɪn/ n
  1. a measured line through a survey area from which triangulations are made
  2. a line at each end of a tennis court that marks the limit of play
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