Economics is "the dismal science," in part because it puts a price tag on the pleasure of moralizing.
经济学是一门“沉闷的科学”，部分原因是它给说教的乐趣贴上了价格的标签。
2
Linking the value that a product or service provides to a price is an art, rarely a science.
把产品和服务的价值与其价格联系起来是一门艺术，而不是一门科学。
3
The report suggests that changing the price point of federal helium and allowing small-scale science labs to make collective purchases from the FHR could mitigate these effects.