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1. Oxford Dictionary

   subtend

   • IPA[səbˈtɛnd]

   英式

   • v.
     (of a line, arc, or figure) form (an angle) at a particular point when straight lines from its extremities are joined at that point；(of an angle or chord) have bounding lines or points that meet or coincide with those of (a line or arc).

   • verb: subtend, 3rd person present: subtends, gerund or present participle: subtending, past tense: subtended, past participle: subtended

2. • 釋義

   v.

   動詞

   • 1. (of a line, arc, or figure) form (an angle) at a particular point when straight lines from its extremities are joined at that point the angle subtended by a string of length
   • ▪ (of an angle or chord) have bounding lines or points that meet or coincide with those of (a line or arc).
   • 2. (of a bract) extend under (a flower) so as to support or enfold it the main beauty is provided by the bracts which subtend the flowers
3. • 更多解釋

   subtend

   • IPA[səbˈtend]

   美式

   • v.
     (of a line, arc, or figure) form (an angle) at a particular point when straight lines from its ... the angle subtended by a string of length

   Oxford American Dictionary