The study authors think that a big factor is that curta ilment is easier to imagine doing - while efforts to improve efficiency would involve , for example , doing research about new or cars , and spending money up front to buy them .
报告的作者认为，通常节约更容易实现，同时提高效率的投入是必需的，比如：研究新型的电器或者汽车，并且预先付。
Curta