彈出彈入 [弹－弹－]

Jyutping daan2 ceot1 daan2 jap6
Pinyin tán chū dàn rù

Definitions (Wiktionary)
  1. verb, Cantonese, figuratively
    to not make up one's mind; to keep changing one's mind
  2. verb, Cantonese, literally
    to move back and forth at a place; to be in and out