- 重点词汇
- 需要
need; want; require; demand; involve; call for; necessitate; take; entail; warrant; claim; depend on; have occasion to; scream for; call; requirement; necessity; requisition; necessary; essential; requisite; in want of; in order; in need of
- 多少
how many; how much; to some extent; amount; number; how; any; well; somewhat; many; much
- 成本
cost; expense; prime cost; production cost; input cost