prime cost
noun🔊/ˈpraɪm kɒst/
🔊/ˈpraɪm kɔːst/
(also first cost)
[countable, uncountable] (the cost of something calculated by adding the cost of materials used to make it and the cost of paying somebody to make it, but not including costs that are connected with running a business, such as rent and electricity 主要成本（包括原材料和劳动力）