生產率

productivity / efficiency of production

to be born / to give birth / life / to grow / raw / uncooked / student

to produce / to manufacture / to give birth to a child

to produce; to manufacture / to give birth to a child

to give birth / to reproduce / to produce / product / resource / estate / property

rate / frequency

to lead / to command / rash / hasty / frank / straightforward / generally / usually