跟蹤

跟踪
gēnzōng
  1. to follow sb's tracks
  2. to tail
  3. to shadow
  4. tracking

CEDICT

Entry Composition

1 跟 gēn
  1. heel
  2. to follow closely
  3. to go with
  4. (of a woman) to marry sb
  5. with
  6. compared with
  7. to
  8. towards
  9. and (joining two nouns)
2 蹤 zōng (bound form) footprint; trace; tracks