垫脚石 diàn jiǎo shí

DEFINITIONS

  1. stepping stone
  2. fig. person used to advance one's career

CHARACTERS

垫 diàn
HSK 6
advance money, pay for another
脚 jiǎo
HSK 3
leg, foot; base, leg, foundation
石 shí
HSK 5
stone, rock, mineral; rad. 112