伤脑筋
shāng​nǎo​jīn HSK7

troublesome

shāng​nǎo​jīn troublesome
  1. 伤 傷 shāng
    to hinder
    to hinder; to obstruct; to be harmful to
  2. 脑筋 腦筋 nǎo​jīn
    brains
    Brains; mind; mental capacity for thinking, memory, or imagination.

shāng​nǎo​jīn to rack one's brains
  1. 伤 傷 shāng verb
    to injure
    to injure; to wound; to damage; to hurt someone's feelings
  2. 脑筋 腦筋 nǎo​jīn
    brains
    Brains; mind; mental capacity for thinking, memory, or imagination.