什么是first cost expense呀?

什么是first cost expense呀? 什么是 amortized cost 什么是成本原则（cost principle) First cost 是指原始价 net first cost 是指什么呀?有关价格的. 什么是first class lever 什么是first name 什么是first-principles calculations It is the first step that cost我觉得很难啊 什么是 cost of goods available for sale first they should work the cost out carefully.first可以单独用吗?和at first有什么区别 值太多的钱 英文翻译为什么是 cost too much ,能不能是cost much money 英语翻译cost 是价值?还有什么是网络释义? the cost of living的live为什么是现在分词 The first 3 year was ( ) in hospital . A paid B spent C taken D cost His carelessness cost him the first place in the compertition帮忙翻译下 为什么是Who won the first prize? 请问什么是first marking period grade? 英语翻译amortized cost held-to maturity securities are reported on the balance sheet at amortized cost.amortized cost is equal to the face value less any unamortized discount or plus any unamortized premium .什么是 amorized cost ,麻烦给解