任意变动成本与任意固定成本合称任意成本（Discretionary Costs）或称为裁成本，意指在管者裁下而引发的成本。 1-18肆、成本观及分三 半固定或半变动成本（Semi-Fixed or Semi- Variable Costs）...
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但是就业机会并非值得任意出价的，这里其成本相当高昂。
But jobs are not worth having at any price, and here the cost is considerable.
只要在边际成本以上的任意价位出售机票，是比空航划算的。
At any price above marginal cost, the airline is better off selling a ticket than flying with the seat empty.
没错，您无需任何成本就可以加入，无需任何成本就可以追随别人，无需任何成本就可以有任意数量的追随者，无需任何成本就可以tweet。
It doesn't cost you anything to follow someone else. It doesn't cost you anything to have any number of followers.
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