Constant cost
[經] 不變成本, 固定成本
?? 詞語組成解析
cost
[k?st]
n. 價錢，代價;花費，費用;犧牲;[用復數][法律]訴訟費;
vi. 價錢為，花費;估計成本;
vt. 付出代價;估價;使喪失;使付出努力;
??? 情景例句
He's 20 kilos overweight for his height.
就他的身高而言，他的體重超了20公斤。
It matters not how long we live but how.
問題不是活得多么長，而是活得怎么樣。
A short time before, great trees had covered the countryside for miles around.
就在不久之前，參天大樹還覆蓋著方圓數英里的土地。