切線 [－线]

Jyutping cit3 sin3
Pinyin qiē xiàn

Definitions (CC-CEDICT)
  1. tangent line (geometry)
Definitions (粵典–words.hk)
  1. 名詞、術語
    （​數學術語​）​喺​曲​線​上​某​一​點​，​啱​啱​掂​(​dim3​)​ ​到​嗰​點​嘅​直​線
    (mathematics) tangent line
    • 圓形半徑同切點上嘅切線互相垂直。
      圆形半径同切点上嘅切线互相垂直。
      jyun4 jing4 bun3 ging3 tung4 cit3 dim2 soeng6 ge3 cit3 sin3 wu6 soeng1 seoi4 zik6.
      The radius of a circle to the point of tangency is perpendicular to the tangent line.
  2. 動詞
    行​車​嘅​時​候​穿​換​行​車​線
    (of vehicles) to cut into another lane; to rapidly change lanes on a multi-lane road and sometimes adversely affecting other drivers as a result
    • 有雙白線代表唔可以切線。
      有双白线代表唔可以切线。
      jau5 soeng1 baak6 sin3 doi6 biu2 m4 ho2 ji5 cit3 sin3
      White double line means you cannot cut across it.
  3. 近義詞
    cut 線
Definitions (Wiktionary)
  1. noun, countable
    tangent (straight line touching a curve at a single point) (Classifier: 條／条 m)
  2. verb, Hong-Kong, verb-object
    to change lanes when driving
    (syn.) cut線, 变道, cut线, 變道
Examples (粵典–words.hk)
  1. Cantonese
    圆形半径同切点上嘅切线互相垂直。
    圓形半徑同切點上嘅切線互相垂直。
    jyun4 jing4 bun3 ging3 tung4 cit3 dim2 soeng6 ge3 cit3 sin3 wu6 soeng1 seoi4 zik6.
    • The radius of a circle to the point of tangency is perpendicular to the tangent line.
  2. Cantonese
    有双白线代表唔可以切线。
    有雙白線代表唔可以切線。
    jau5 soeng1 baak6 sin3 doi6 biu2 m4 ho2 ji5 cit3 sin3
    • White double line means you cannot cut across it.
  3. Cantonese
    胡乱切线，累己累人。
    胡亂切線，累己累人。
    wu4 lyun6 cit3 sin3, leoi6 gei2 leoi6 jan4.
    • If you cut the line recklessly, you will cause troubles for others and yourself.