American firms used to be allowed to amortise goodwill over many years. 过去美国的企业被允许将商誉在很多年内逐步摊销。
This might not matter to a sophisticated economist, who would amortise the battery cost over the life of the vehicle. 这也许不会令那些顽固老练的经济学家感冒,因为他们懂得把电池的成本分摊到汽车的寿命上。