[化] 纯成本; 工料费; 工本费
[经] 统一成本

flat cost的用法和样例：

例句

That is what economists mean when they talk about the difference between marginal private cost and net social cost.这就是经济学家们说的私人边际成本与社会净成本之间的差别。

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2008年ESL之商务英语

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美国习惯用语

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Entertainment

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发表于:2018-12-26 / 阅读(142) / 评论(0)

公寓伙伴

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发表于:2018-12-26 / 阅读(141) / 评论(0)

公寓伙伴

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2015年ESL之旅行交通购物

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外研社新标准初中英语七年级

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外研社新标准初中英语七年级

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多功能英语阅读

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发表于:2019-01-02 / 阅读(133) / 评论(0)

原版英语小短文

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早安英文

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双语有声阅读

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阅读空间

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