久经考验 jiǔ jīng kǎo yàn

DEFINITIONS

  1. well tested (idiom); seasoned
  2. veteran

CHARACTERS

久 jiǔ
HSK 3
long time (ago); time passage, grow late
经 jīng
HSK 2
classic works; pass through
考 kǎo
HSK 2
examine, test; investigate
验 yàn
HSK 4
test, examine, inspect; verify