An increase in a fixed cost shifts the total cost (TC) and average total cost (ATC) curves upward but does not shift the marginal cost (MC) curve.是什么意思_An increase in a fixed cost shifts the total cost (TC) and average total cost (ATC) curves upward but does not shift the marginal cost (MC) curve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句