生產成本

production costs

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

surname Cheng

to succeed / to finish / to complete / to accomplish / to become / to turn into / to be all right / OK! / one tenth

(manufacturing, production etc) costs

root / stem / origin / source / this / the current / original / inherent / originally / classifier for books, periodicals, files etc