Warning: file_put_contents(/www/wwwroot/ppbbu/laei.cn/cache/24d2945902ac73d92d6c3d5fbb368ddc.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/laei.cn/index.php on line 58 prime cost英英字典_prime cost剑桥英语解释_prime cost柯林斯英文解释_按摩法牛津词典
1. N the portion of the cost of a commodity that varies directly with the amount of it produced, principally comprising materials and labour 主要成本 (Also called variable cost)→compare overheads