掉链子 diào liàn zi

DEFINITIONS

  1. one's bicycle chain comes off
  2. (fig.) to let sb down
  3. to drop the ball
  4. to screw up

CHARACTERS

掉 diào turn, move; shake, wag; drop down
链 liàn chain, wire, cable; chain, shack
子 zi offspring, child; fruit, seed of; 1st terrestrial branch