既有线

既有線
jìyǒuxiàn
  1. (Mainland China, rail transport) non-high-speed railway lines
  2. non-high-speed railway lines

Wiktionary

Entry Composition

1 既有 jìyǒu existing
=2 线 xiàn variant of 线 xiàn
=2 线 xiàn
  1. thread
  2. string
  3. wire
  4. line
  5. (after a number) tier (unofficial ranking of a Chinese city)

classifiers: 條, 股, 根