力争

力爭
lìzhēng
  1. to work hard for
  2. to do all one can
  3. to contend strongly

CEDICT

Entry Composition

1 力 lì
  1. power
  2. force
  3. strength
  4. ability
  5. strenuously
2 争 zhēng
  1. to strive for
  2. to vie for
  3. to argue or debate
  4. deficient or lacking (dialect)
  5. how or what (literary)