[-线]

Jyutping jaai2 sin3
Pinyin cǎi xiàn

Definitions (粵典–words.hk)
  1. 動詞
    探路​;​先行​瞭解​行程​所​需
    to check out the route in advance to gather information
  2. 參看
    踩綫

[-线]

Jyutping caai2 sin3
Pinyin cǎi xiàn

Definitions (CC-CEDICT)
  1. to scout for a tour operator
  2. to reconnoiter a potential tour itinerary
  3. (tennis) to commit a foot fault
Definitions (粵典–words.hk)
  1. 動詞
    探路​;​先行​瞭解​行程​所​需
    to check out the route in advance to gather information
  2. 參看
    踩綫
Definitions (Wiktionary)
  1. verb
    to make a foot fault