變速 [变－]

Jyutping bin3 cuk1
Pinyin biàn sù

Definitions (CC-CEDICT)
  1. to change speed
  2. to shift gear
  3. variable-speed
Definitions (粵典–words.hk)
  1. x
Definitions (Wiktionary)
  1. verb, formal
    to shift gears
    (syn.) 換擋, 换挡, 轉波, 转波
  2. verb
    to change speed
Definitions (Kaifangcidian)
  1. （沒有對應漢語詞彙）