掉鏈子 [－链－]

Jyutping diu6 lin4 zi2
Pinyin diào liàn zi

Definitions (Wiktionary)
  1. verb, figuratively, idiomatic
    to drop the ball

掉鏈子 [－链－]

Jyutping diu6 lin2 zi2
Pinyin diào liàn zi

Definitions (CC-CEDICT)
  1. to have one's bicycle chain come off
  2. (fig.) to let sb down; to drop the ball; to screw up