此起彼落 cǐ qǐ bǐ luò

DEFINITIONS

  1. to rise and fall in succession (idiom)
  2. repeating continuously

CHARACTERS

此 cǐ this, these; in this case, then
起 qǐ rise, stand up; go up; begin
彼 bǐ that, there, those
落 luò fall, drop; net income, surplus