公用交换电话网 gōng yòng jiāo huàn diàn huà wǎng

DEFINITIONS

  1. public switched telephone network
  2. PSTN

CHARACTERS

公 gōng
HSK 2
fair, equitable; public; duke
用 yòng
HSK 3
use, employ, apply, operate; use
交 jiāo
HSK 4
mix; intersect; exchange, communicate; deliver
换 huàn
HSK 3
change
电 diàn
HSK 1
electricity; electric; lightning
话 huà
HSK 1
speech, talk, language; dialect
网 wǎng
HSK 3
net; network; KangXi radical 122