to do in stages

• 分期付款

  pay in instalments

• 分期付款买轿车

  pay for a car in instalments

• 分期偿还

  return in stages

• 分期完工

  finish the work in stages

• 分期偿债

  repay a debt in instalments

• 分期摊还债款

  amortize a debt

• 分期分批

  in stages and batches